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Operator
Thank you for joining us today for Udemy's Fourth Quarter and Fiscal 2021 Call.
I will now turn the call over to [Taylor Giles].
Unidentified Company Representative
Thank you. With me today are Gregg Coccari, Udemy's CEO; and Sarah Blanchard, Udemy's CFO.
Before we begin, during this conference call, we may make forward-looking statements within the meaning of federal securities laws. These statements involve assumptions and are subject to known and unknown risks and uncertainties that could cause actual results to differ materially from those discussed or anticipated. For a complete discussion of risks associated with these forward-looking statements, we encourage you to refer to our most recent Form 10-K and Form 10-Q filings with the Securities and Exchange Commission.
Our forward-looking statements are based upon information currently available to us. We caution you not to place undue reliance on forward-looking statements, and we do not undertake and expressly disclaim any duty or obligation to update or alter our forward-looking statements, except as required by applicable law.
In addition, during this call, certain financial performance measures may be discussed that differ from comparable measures contained in our financial statements prepared in accordance with the U.S. generally accepted accounting principles referred to by the Securities and Exchange Commission as non-GAAP financial measures. We believe that these non-GAAP financial measures assist management and investors in evaluating our performance and comparing period-to-period results of operations in a more meaningful and consistent manner as discussed in greater detail in the supplemental schedules to our earnings release.
A reconciliation of these non-GAAP measures to the most comparable GAAP financial measures is included in our earnings press release. These reconciliations, together with additional supplemental information, are available at the Investor Relations section of our website.
A replay of today's call will also be posted on the website.
I will now turn the call over to Gregg.
Gregg Andrew Coccari - President, CEO & Chairperson of the Board of Directors
Thank you for joining us.
We're very pleased with our performance in the quarter, which came in ahead of guidance. We experienced continued extraordinary growth and momentum in Udemy Business, which grew 81% year-over-year, contributing to our overall top line growth of 25% versus 2020.
In the quarter, more than 32 million unique visitors per month visited our consumer marketplace, and we reached over 10,500 Udemy Business customers. As we look to 2022, we see the tailwinds of upskilling and reskilling driving Udemy Business' strong ARR, which was $239 million exiting the fourth quarter.
In Q4, our Consumer business returned to growth, and we believe it has stabilized at roughly 1.3x pre-pandemic revenue levels. Global traffic remains strong, and we continue to see more than 5,000 new courses published each month. Our consumer marketplace is the engine that provides high-quality content for Udemy Business and helps generate the leads driving its growth and success. Our marketplace allows us to maintain our affordability and accessibility, and it's where tens of millions of learners help us identify the fresh, high-quality, relevant content that is a true differentiator for us.
With content in more than 75 languages, our consumer marketplace enables us to expand the reach of Udemy Business to now include 13 language packages, most recently in Polish and Korean. In addition, we've built the tools and playbooks that we believe our Udemy Business customers need to attract, retain and engage their employees, driving phenomenal ROI and an impressive learner Net Promoter Score of 61. Our ability is to provide broad, deep array of high-quality content to enterprises on a truly global scale is driven by our consumer marketplace, and it's what puts Udemy Business in a league of its own when it comes to supporting global organizations.
We continue to see increasing traction in our second quarter as a public company. In the quarter, we had 440 Udemy Business customers with over 100,000 ARR and our first deal with a total contract value of over $5 million as enterprise customers increasingly see the value of what we provide in the future of work. To illustrate, let me give you an example.
We're working with EY, one of the largest professional service networks in the world. Of EY's 340,000 employees, 200,000 are currently using Udemy Business as they prioritize learning. EY's goal is to enable employees to learn in a virtual world, and using the Udemy platform they are experiencing great success. They hold an impressive employee learning satisfaction rate of 84%. Udemy Business is also collaborating with EY on their batches program as a key content provider. This program enables employees to hone their digital and leadership capabilities and earn badges for future-focused skills such as data science and AI, transformative leadership, inclusive intelligence and more.
Udemy Business is also collaborating with EY on their free Masters programs, which is offered in association with Hult International Business School. Our content is crucial to the program which is available to all EY employees free of charge.
Learners are the reason we exist, and their stories motivate us every day. Our social impact program is one of the many ways we seek to fulfill our mission. On Veteran's Day, we announced the Sentinels of Freedom as our latest social impact partner. We partnered to help severely wounded, post-9/11 veterans, who are referred to as Sentinels, identify and achieve the skills they need to build long-lasting and successful careers in their chosen disciplines. The program is designed to meet each veteran's individual needs, assisting them with their higher education, offering ongoing mentorship, life skills coaching, career development, networking and financial assistance.
We also support Upwardly Global, a nonprofit that aims to eliminate the employment barriers that skilled immigrants and refugees encounter when entering the U.S. workforce. Our partnership gives job seekers access to learning resources that prepare them to pass industry-recognized certifications and secure new jobs. We have 2 amazing stories of Upwardly Global learners who changed their lives through the program.
Originally, from Kazakhstan, [Erulan Tolubukov] had more than 5 years of experience in logistics and was looking to pivot his career to IT. With no IT background, his Upwardly Global coach advised him to enroll in a CompTIA A+ course on Udemy. With the IT skills he learned on Udemy, [Erulan] landed a job as a help desk analyst at the world's largest home improvement specialty retailer.
Likewise, [Muhammad Aveed Emerzed], who was a project manager in Afghanistan, joined Upwardly Global to learn about the systems and technologies that are relevant in the U.S. job market. Muhammad began taking project management courses on Udemy Business and honed his project management skills to become more competitive for U.S. jobs. He has since successfully landed a job as a senior construction project scheduling consultant in a construction services company.
Our instructors are at the heart of Udemy's success and our learners' engagement. During the year, we had 34 instructors who earned over $500,000 and 19 who earned over $1 million. And in 2021, our paid instructors earned $177 million from Udemy for their courses. Let me share a few examples of how our instructors create content that moves at the speed of market change.
In October, Udemy instructor, Alan Rodrigues, published a course on Azure Networking Solutions, a full month before the AZ-700 exam was updated. Alan then updated the course content again in December to ensure that it's as relevant as possible to the Azure networking exam. Alan's commitment to fresh, quality content has attracted more than 350,000 learners from around the world.
So many other instructors are also benefiting from the Udemy marketplace. This year, Chris Haroun, who teaches business and self-improvement courses, had his best year yet on Udemy, and crossed the 1 million student milestone.
Vital Nsengiyumva took one of Chris' Udemy's classes a few years back. They became friends and eventually met in person at a Udemy event in 2019, then decided to combine their business acumen and engineering skills to build a school in Rwanda near the village where Vital was raised. Now they plan to build schools in other geographies struggling with access to education.
Instructors like Chris inspire us every day, and we believe our investment in their talent is key to our differentiation and social impact.
We also have partners that help us maintain our place as the most global online education platform. Last quarter, we announced new partnerships with Woongjin ThinkBig in Korea, Sanjieke in China and MultiChoice Group in sub-Sahara Africa. While it's still early, we expect these to lead to the same kind of success we're enjoying with our partnership with Benesse in Japan, which is one of our fastest-growing markets.
We'll continue to add partners as we systematically expand our presence internationally. Our partners extend our reach in terms of creating content, understanding the local markets and bolstering our sales force and brand.
To keep pace with the demand for upskilling and reskilling, we track our business customers and their employees using our platform. We recently published our 2022 Workplace Learning Trends Report in which we analyze trends based on what employees are learning across thousands of customers around the world. The range is broad but reflective of the change in workplace.
The top skills sold on Udemy in 2021 included power skills for leaders in management, where we've seen triple-digit growth in categories like office productivity, leadership and management, and personal growth over the past year. Employees are also seeking productivity and collaboration courses, personal development and wellness courses, and technical training courses, such as Global Cloud, which was up 645%; and Microsoft AZ-500, up nearly 400% versus a year ago.
We're on the front line of helping employees cope with evolving job requirements at a time of rapid change, and we facilitate learning with more than 5,000 new courses created each month. Over 40% of these are languages other than English.
To ensure that the incredible depth and breadth of our marketplace is user-friendly, we're continually improving our platform. During the quarter, we rolled out support for 8 new local currencies across geographies, including Chile, Malaysia and Nigeria, bringing the total number of currencies we support to 28. Additionally, we released 3 new payment methods that provide learners in different countries with a more seamless checkout experience and buy-now-pay-later capabilities, consistent with our commitment to being affordable, accessible and localized.
As part of our Udemy Pro offering, we launched benchmark assessments, which show learners key metrics such as their score, percentile rank and knowledge classification. This is a critical stepping stone to providing organizations with insight into skills gaps they have and how Udemy is helping them fill those gaps.
Additionally, we have released 10 new software development labs within Udemy Business Pro. Labs provide a hands-on learning experience that allows learners to apply their skills by completing real-world projects using interactive environments. In the quarter, we also integrated better personalized lecture recommendation tools based on our machine learning algorithm. This is all part of our commitment to improving the learner journey.
In Q4, we received a number of awards recognizing our product innovation, company culture and organizational leadership. G2, a leading global review site, ranked Udemy Business as a leader in 26 reports across several categories, including online learning platform based on high levels of customer satisfaction and likeliness to recommend. Our Dublin office was officially certified as a great place to work in Ireland, and Inc. Magazine named Udemy as one of the best-led companies in America.
Udemy was founded to make learning accessible and inclusive, and we take the responsibility of serving our learners and instructors very seriously. As we shared in our previous earnings call, we're incredibly proud to have been ranked by Sustainalytics in the first percentile for ESG risk ratings in the Internet software and services sub-industry as of July 2021. In January, Sustainalytics also awarded Udemy its ESG Industry Top-Rated badge for 2022.
We've barely scratched the surface in our $200 billion TAM, and we believe Udemy Business is the fastest-growing enterprise learning platform, with a compounded annual revenue growth rate over 100% since its inception in 2015. We look forward to sharing our progress with you throughout the year as we help transform learning and the way we work with our vibrant consumer marketplace and exceptional Udemy business platform.
With that, I'll turn the call over to Sarah.
Sarah Walter Blanchard - CFO
Thank you, Gregg.
The phenomenal growth of Udemy Business, the progress in consumer subscriptions, personalization and immersive learning capabilities, our strategic partnerships in Africa, Korea and China, it was quite a quarter for us.
Q4 revenue of $138 million was up 25% year-over-year and up 6% sequentially. Udemy Business revenue was $58 million, up 81% from the prior year, an exceptional growth rate at this scale. Our Consumer business delivered $80 million, up 3% from the prior year. The consumer segment has stabilized and is on a path to future growth as we return to the new normal. We've seen significant traffic growth in certain geographies, which have a lower price point but also lower CAC, allowing us to maintain our focus on unit economics.
While we are really excited about the growth in these regions, it is harder to predict mix and retention as buying behavior differs by country. For that reason, we are expecting consumer revenue in the first half of the year to be flat to slightly down versus the first half of 2021. And we are continuing to prioritize consumer subscriptions which will provide increased visibility over time.
For the remainder of this discussion, all financial metrics are non-GAAP, unless explicitly stated otherwise.
Q4 gross profit was $75 million, up 38% year-over-year driven by the strong results in Udemy Business. Gross margin was 54.6% of revenue, approximately 500 basis points higher than Q4 of 2020. The mix shift towards Udemy Business, combined with a softer December, drove the increase in gross margin. As a reminder, we see gross margin suppression when we have spikes in GMV and instructor costs are recorded immediately but revenue is recognized over a 4-month period.
For fiscal year 2021, gross profit was $285 million, up 29% versus fiscal year 2020. And gross margin was 55% of revenue, approximately 350 basis points higher than in 2020. Our cost of revenue consists primarily of content costs, which are payments to our instructors. As a reminder, content costs depend upon the mix between consumer courses and Udemy Business learners. We expect content costs as a percentage of revenue to decrease over time as Udemy Business becomes a larger portion of overall revenue.
Turning to OpEx. Total operating expense was $102 million or 74% of revenue compared to 66% in Q4 last year. Sales and marketing expense represented 49% of total revenue compared to 44% in Q4 of 2020 driven by the shift towards Udemy Business and our investment in our global go-to-market team. Udemy Business represented 42% of our revenue in Q4, up from 29% a year ago.
Research and development expense was 12% of revenue, flat with the year-ago period as we continue to increase investments in immersive learning, consumer subscriptions and further improve our personalization and machine learning capabilities, all part of our efforts to drive learning outcomes and higher LTVs. General and administrative expense was 13% of revenue versus 10% a year ago as we ramped for public company readiness.
Total OpEx in fiscal 2021 was $324 million or 63% of revenue compared to 61% last year. Sales and marketing expense represented 42% of total revenue compared to 43% in 2020. Research and development expense was 11% of revenue, consistent with the year-ago period. General and administrative expense was 9% of revenue versus 8% a year ago. Net loss in the quarter was negative $26.8 million or negative 19% of revenue. Adjusted EBITDA was negative $22.6 million or negative 16% of revenue.
In order to capture our huge TAM and continue the momentum in Udemy Business, we will continue to incur short-term losses while incrementally gaining leverage for longer-term profitability.
Free cash flow was negative $1.6 million versus positive $15.4 million a year ago. Net loss in the fiscal year was $41.3 million or negative 8% of revenue. Adjusted EBITDA was negative $25.4 million or negative 5% of revenue versus negative $30.7 million or negative 7% of revenue a year ago. Free cash flow was negative $25.3 million versus negative $4.9 million a year ago.
Adjusted EBITDA and free cash flow were impacted by public company-related costs and a softer-than-expected December, which is a key month for us due to the holidays.
Moving on to the balance sheet. We ended the quarter and the year with $534 million of unrestricted cash, cash equivalents and marketable securities.
Looking at the Consumer and Udemy Business segments individually. Consumer revenue in Q4 was $80 million, up 3% versus a year ago. In the quarter, we had approximately 1.4 million monthly active buyers, up 1% year-over-year. Consumer gross profit was $39.4 million or 49.2% of consumer revenue, approximately 300 basis points higher than in Q4 of 2020. During the quarter, we had 2.5 million new consumer and business learners, bringing our total learner base to 49 million.
As Gregg mentioned, our Consumer business is the engine that fuels broad, high-quality content and leads to Udemy Business and is a huge differentiator for us. While we are pleased to see it stabilize at a significantly higher level than pre-pandemic, what's most important is that the marketplace remains healthy, that our instructors continue publishing high-quality content and that we can access the local content that fuels Udemy Business.
The marketplace continues to provide more than 5,000 courses a month across an extremely wide variety of CapEx which we are able to curate into a very compelling offering for organizations. To that point, the exceptional growth in Udemy Business continues, with Q4 revenue of $58 million, up 81% year-over-year. We exited the quarter with over 10,500 Udemy Business customers, up 44% year-over-year. Udemy Business net dollar retention rate was 118%, and ending ARR of $239 million was up 74% as compared to the prior year.
Going forward, Udemy Business should continue to grow rapidly, with revenue expected to exceed Consumer revenue before the end of the year. We are really excited about this. Our ARR is best-in-class, as is our growth at scale, and the continued revenue shift to our Udemy Business increases our top line visibility.
Udemy Business gross profit was $38.6 million or 66.9% of Udemy business revenue, which represents a roughly 200 basis point increase year-over-year. This increase was largely due to revenue from our partnerships, such as Benesse, which have lower support costs than our direct sales channel.
For fiscal 2021, Consumer revenue was $331 million, up 1% versus a year ago. We had approximately 1.3 million monthly active buyers, down 7% year-over-year as we dealt with COVID comps. Consumer gross profit for the fiscal year was $172 million or 51.9% of Consumer revenue. Fiscal 2021 Udemy Business revenue was $187 million, up 81% year-over-year. Udemy Business gross profit in 2021 was $123 million or 65.8% of Udemy Business revenue.
Looking to the first quarter of fiscal 2022, we expect revenue between $144 million and $148 million, with Udemy Business expected to deliver year-over-year revenue growth over 70%. We expect an adjusted EBITDA margin of negative 11% to negative 9%.
For fiscal year 2022, we expect revenue between $610 million and $640 million, with Udemy Business revenue between $300 million and $310 million, representing growth of 60% to 66% year-over-year; and Consumer revenue between $310 million and $330 million, down 6% to flat year-over-year.
While we won't provide annual guidance by segment going forward, the nature of the current consumer market provides us with less visibility into full-year consumer revenue so we are sharing a wider range. In contrast, the sales model of our Udemy Business segment provides greater revenue predictability and we are confident with our forecast here.
We expect an adjusted EBITDA margin of negative 12% to negative 10%. While we are still experiencing some volatility in the Consumer business, with certain countries up and others down year-over-year, our Udemy Business segment is even stronger than we expected. Our customer satisfaction, as Gregg mentioned, is exceptional, and we are continuing to build and improve our offering to ensure we provide the very best learning experience.
We have a unique vantage point. We can see the Consumer business country-by-country and are able to manage our consumer marketing spend accordingly as we work through this pandemic. At the same time, Udemy Business is growing rapidly across the globe, which increases our visibility.
In R&D, we are investing in areas that we think will have the most impact on driving learner outcomes, increasing GMV over time and delivering better unit economics through consumer subscriptions and increased retention. We remain focused on executing against our long-term strategy, and while we are increasing our investment for the year, given the outside success of Udemy Business, we expect to see much less of an impact on cash flow with just a modest increase in cash burn for the year.
And with that, operator, please open the call for questions.
Operator
(Operator Instructions) Our first question comes from Rob Oliver of Baird.
Robert Cooney Oliver - Senior Research Analyst
Gregg, one for you, and then I had a follow-up for you, Sarah. So Gregg, clearly, you guys are firing on all cylinders here on the Udemy for Business -- the UB business. Some really strong logos, new lands, really great logos on expansions. I'm curious -- you guys mentioned sort of curation of some of the courses around UB, and I'm wondering if you could just help us understand on those expansions -- because NRR is like stabilizing nicely now.
On those expansion deals you're seeing for UB, is it still predominantly IT? Or are you seeing more of an HR driven by -- a little bit more color around those deals would be great. And then I had a quick follow-up for Sarah.
Gregg Andrew Coccari - President, CEO & Chairperson of the Board of Directors
Yes, Rob. It's actually very broad-based. So it's -- we come in both sides of the house. We come into the HR side, and we're selling successfully in there. And we come into the tech side. And so it's very bond-based, both sides of the companies. And so expansions are in tech teams, but they're also much broader than that. Our content tends to be very broad. We have all kinds of learning content and leadership content and communication content. So it works for almost every person in the corporation. So it's a broad-based expansion.
Robert Cooney Oliver - Senior Research Analyst
Okay. Great. That's great to hear.
And then, Sarah, one for you. Just on the consumer business, and I don't want to distract from the obvious here, which is the UB business just getting really, really strong and going to be the majority of your revenue this year. But on the consumer side, some caution, I think, in the guidance, I wanted to just drill down on the personal plan, the subscription. You mentioned that's going to be an increasing focus in an uncertain environment.
Just from my own navigation and being a customer of you guys, I was not offered the personal plan, but then all of a sudden, now I am being offered. So just wondering if you guys are expanding out the personal plan and any early reads on traction? And whether that $29 price point is -- feels right. And any update there would be great.
Sarah Walter Blanchard - CFO
Also, Rob, I would say you're a lucky Udemy learner because not many people are seeing the personal plan yet. We are still in testing mode as we spoke about. So we plan to be in beta mode for the first half of the year. Our investments are not just in the subscription platform, which we built out from a pricing and packaging perspective. And we're doing testing there, and so you saw one price but there's different prices we're testing.
But really, what we're focused on is the learning outcomes, building and learning paths, and really making it a very compelling subscription offering. We see successful subscription offerings in the market. We have great content, and so just rounding out that offering so that it's the subscription we want to roll out to the masses is what we're focused on. And we don't expect the rollout to be until the second half.
Operator
Our next question comes from Terry Tillman of Truist.
Joseph Daniel Meares - Associate
This is Joe Meares on for Terry. I think last quarter, you mentioned that you'd incorporated some new machine learning capabilities to enhance functionality around conversion and retention in the consumer business. Just wondering if you're seeing any traction there to kind of help stabilize this business.
Gregg Andrew Coccari - President, CEO & Chairperson of the Board of Directors
Yes. So we've invested a lot in AI and machine learning. It's something that we're doing across our business. So we use it in our pricing engine, we use it in our -- in matching and recommendations and we're using it in numerous places. So we're actually seeing some wins there, though. In the matching and recommendations, we actually did have a nice win in the fourth quarter. We saw the ability to increase conversion rates by just doing a better match on the edtech -- the courses people were looking for.
Joseph Daniel Meares - Associate
Okay, that's great to hear. And then just as a follow-up, I think last quarter, you mentioned that the go-to-market team was at about 400 people. I'm just wondering if that increased sequentially. And then just like on a broader level, how is the overall hiring environment for Udemy? And what should we think about the headcount being as you exit 2022?
Gregg Andrew Coccari - President, CEO & Chairperson of the Board of Directors
Yes. The go-to-market team, that's go-to-market plus customer successes, the 400 number. We've grown our go-to-market team about 50% last year. And our plans are to grow it again about 50%, maybe a little bit more than that. We are finding -- it is a difficult hiring environment, but we ended up doing very well. We're the kind of company that people like to work for. We're a mission-based company. We're doing well in the marketplace. We have a very nice culture. So we've been hiring -- actually, I think December was our biggest hiring month in the history of Udemy Business.
Sarah Walter Blanchard - CFO
Yes. Joe, just to give you a little color on that. We were able to hire 50 people in Udemy Business in December, which was well above what we were expecting, especially given it's really tough to hire salespeople in the fourth quarter when they're getting to their accelerators. So we're pleased with what we see. We continue to see a lot of traction in hiring both across Udemy Business and within our R&D team. So I think Gregg's right. I think it's the culture, the mission, I think, and the belief in where this company is going that really helps us out.
Joseph Daniel Meares - Associate
Really helpful quantitative color. Appreciate it.
Operator
Our next question comes from Sterling Auty of JPMorgan.
Drew Elizabeth Glaeser - Research Analyst
This is Drew on for Sterling. You referenced the softer-than-expected December month. Could you provide some more color on what occurred there, and any impact from seasonality that you're seeing currently?
Gregg Andrew Coccari - President, CEO & Chairperson of the Board of Directors
Yes. The consumer market is volatile. And in other words, some countries are -- the traffic is growing quite rapidly and some of it is going down. And so in December, we just saw a little volatility. It actually came back in January. So January, it stabilized again, but it's a volatile consumer market. As they're closing down countries, it's still pandemic-related. Certain countries are closing down, certain -- are opening up. So we're just having to weather that type of environment.
But we're very happy with our traffic. I mean our overall traffic has remained over 30 million unique visitors. We came into the pandemic in about 16 million to 18 million unique visitors. So we've stabilized at a much higher -- bigger business than we had before. But yet, it is still volatile given that we're going into year 3 of the pandemic.
Sarah Walter Blanchard - CFO
I think for add -- to add to that is, we are -- as Gregg said, we're very diversified globally. So we see countries that are going up. We see countries that are stable, countries that declined a bit. A lot of the growth we are seeing are in some of the lower LTV or lower kind of purchasing power countries. But we're able to allocate our spend, and we can lean in where we're seeing good conversions. We can pull back where we're seeing the conversion is not as good. So we're managing our direct marketing spend accordingly as we continue to sort of work through this.
Operator
Next question comes from Stephen Sheldon of William Blair.
Stephen Hardy Sheldon - Analyst
Congrats on the strength in the business segment.
Curious what the labor and talent shortage across industries has maybe meant for demand for your enterprise solutions. I guess what trends have you seen in corporate learning budgets? Are they going up? And what's their level of urgency to provide upskilling opportunities to existing employees in this environment where maybe they can't hire as much as they'd like externally?
Gregg Andrew Coccari - President, CEO & Chairperson of the Board of Directors
We are seeing a very good enterprise business. The market is expanding right now. People, they send everybody home. Everybody is working from home, a lot of the training was in-person. So the digital transformation is decelerating across all the enterprises. And so it's a very, very good market right now. So the budgets are getting bigger, and there is a sense of urgency. There -- people are leaving. There's a great resignation.
People are worried about retention and worried about employee engagement. And so it's a particularly good time. We think we have a great solution. We think we have a -- we're at the right place at the right time with the right solution in the enterprise business, but the market is particularly good.
Operator
Our next question comes from Ryan MacDonald, Needham & Company.
Ryan Michael MacDonald - Senior Analyst
Gregg, you've talked about -- quite a bit in the past about international expansion remaining a top priority for Udemy over the next few years here. Given -- I'd be curious how you're prioritizing and focusing on which countries to drive incremental investment and how that maybe differs based on what you're seeing in the consumer side versus what you're seeing in the enterprise side.
Gregg Andrew Coccari - President, CEO & Chairperson of the Board of Directors
Yes. Thanks for the question. We've always been the most global and tech company folks. More than 70% of our consumer revenue is outside the U.S., and we have a playbook that -- we look where there's obviously large populations, but where our A-list content is being consumed, very high. And so then we start working on our playbook, which is we put somebody into the market and start developing local content, then we do local currencies and then we do local payments. And then we do local marketing and then we bring in go-to-market teams. So that's a playbook that we've been running, and we're running across the globe, and there are various different investments depending on the country.
But right now, for example, we're working in Indonesia. We're building our business there. We're investing heavily in there. In Asia, we moved into Korea and China through partnerships, so we're expanding in there. And we're working in sub-Sahara Africa with MultiChoice with a partner there. So it's -- we're expanding in a lot of different directions.
And as far as Udemy Business, we are expanding across the globe, and it's very broad-based. So we are building our go-to-market teams. We started in North America. We built out EMEA next. We're still continuing to build out that. Then we built out APAC, and now, we're building out Latin America. So we are building out a global go-to-market team.
Ryan Michael MacDonald - Senior Analyst
That's helpful. Maybe just as a follow-up, and this is for, I think, Sarah as well. I think you mentioned on the -- in your prepared remarks, Sarah, that you get a slight gross margin benefit on Udemy Business from the mix of sales coming from partnerships there. So as you think about continued expansion of Udemy Business into new countries, is there a preference or prioritization to try to go to market with partners in UB or go directly being the preferred choice still?
Sarah Walter Blanchard - CFO
It's a great question, Ryan. It's a very minor benefit in comparison to us really making the right decision for that country, whether we can do it ourselves and we know we can bring the best sort of go-to-market strategy or whether our partner is the best. So I think that supercedes the small benefit we get in gross margin.
Operator
Our next question comes from Brent Thill of Jefferies.
David Marshall Lustberg - Equity Associate
This is David Lustberg on for Brent. I'll start with one, then I have a follow-up. And sorry if I had already missed this, but just curious if you could talk on the consumer side. With what we're seeing, is this a competitive thing at all? Or is this really just lapping super tough COVID comps and people are going back outside? Just curious if you could talk to is it a competitive dynamic or rather consumer behavior?
Gregg Andrew Coccari - President, CEO & Chairperson of the Board of Directors
It's consumer behavior. We're seeing -- in certain markets, we're seeing the overall traffic for online learning going down. There are certain markets, we call them fatigue markets, that have been on Zoom for 2 years, and we're seeing that in some markets. But then conversely, in other markets, the traffic is growing rapidly.
So it is not a competitive issue. It is a total -- we have the most traffic of any edtech website in the world with over 30 million unique business. So we see more data than anybody else, and we're more global than everybody else. And it's really -- it's absolutely a pandemic issue versus a competitive issue.
David Marshall Lustberg - Equity Associate
Got it. And then as a follow-up on -- adjusted EBITDA guidance came in below the Street. I'm curious, is that -- was that just the Street being too high or is there areas that you guys are focusing on prioritizing investments in? Just curious if you could provide some color on that end.
Sarah Walter Blanchard - CFO
Yes. So I think you've seen our Udemy Business performance, it continues to exceed our expectations and continues to outperform. And so we are further accelerating the expansion of our global go-to-market team. We have an unheard-of learner NPS at 61 in the space. We've got 80% growth at scale, and we are not feeling that we're getting anywhere close to the edges of that. So -- and frankly, the hiring has gone much better than we expected. So we're leaning in hard on Udemy Business.
And in general, when you think about our business as a whole, the enterprise business is growing really fast. It does have a lower EBITDA margin really than the consumer business. And so I think with the consumer guidance being down a little bit, that's what we're experiencing.
Operator
Our next question comes from Jason Celino of KeyBanc.
Jason Vincent Celino - Senior Research Analyst
Perfect. So it's nice to hear the stats on the instructors who earn over $0.5 million and $1 million last year. But when we think about attracting the best instructors, how is that positioned for growth for the upcoming year?
Gregg Andrew Coccari - President, CEO & Chairperson of the Board of Directors
You broke up. I didn't hear that question.
Jason Vincent Celino - Senior Research Analyst
So I wanted to ask about the -- attracting the top instructors to Udemy. It seems like it's a tough hiring environment. But how is it from instructor attraction standpoint?
Gregg Andrew Coccari - President, CEO & Chairperson of the Board of Directors
Yes. So we're finding that -- our publishing is at record levels. We're publishing over 5,000 new courses a month. We're bringing in top people. In fact, we just brought in 2 top instructors from a competitor in the last couple of months. And so we're finding that because we monetize very well for the instructors, our instructive payments this year are going to be over $200 million, that we're having no trouble at all getting the instructions we want and getting the publishings that they want.
In fact, this is the new creator economy, and we are a place where they know they can come and they can make money. And we're partners, and so we work very well with them. So that has not changed at all. It's been very robust.
Jason Vincent Celino - Senior Research Analyst
Okay. Perfect. And then when we think about the consumer business, the conversion between the monthly average buyers in the top of the funnel, when we crunch it down, it looks like it's stabilized a little bit, at least for Q4. But with the guidance for '22, maybe can you speak to what is implied directionally for that for this year?
Sarah Walter Blanchard - CFO
Yes. So I think -- Jason, I think in the first half, we're not expecting a lot of growth in monthly average buyers. I think in the back half, really, what we're looking to do is drive more LTV from our buyers through subscriptions over time and through personalization and retention efforts versus trying to get more back to growth coming from the monthly average buyers.
Operator
Our next question comes from Josh Baer of Morgan Stanley.
Joshua Phillip Baer - Equity Analyst
Great. And it's great to hear about the progress on Udemy Business and Udemy Pro features, specifically benchmark assessments and labs.
I'm just wondering what else are you working on around Udemy Pro. What else are enterprise is asking for? And how does this tie into the EBITDA guidance and some of the investments that you're making?
Gregg Andrew Coccari - President, CEO & Chairperson of the Board of Directors
Yes. Thank you for the question. Udemy Pro, we're building out multiple verticals. So we started with AWS and web development, and we're building out Global Cloud and Azure. So those are things that we're being asked to build from the various verticals in the different companies.
On the other side, we're being asked for leadership training. And the reason why we bought CorpU was that we were being asked for more leadership training. It's something that every company needs more of and so -- and cohort-based. So we're building out CorpU. We're starting with leadership, we're ramping that up, and then we're going to build out the other verticals and cohort-based learning.
Sarah Walter Blanchard - CFO
And Josh, just from an investment perspective, our investment on the R&D side is what we were expecting. It's really the sales and marketing on the UB side that we're accelerating this year because we continue to see that traction, and we're taking our expectations for Udemy Business revenue up.
Operator
Our next question comes from Nat Schindler of Bank of America.
Nathaniel Holmes Schindler - Director in Equity Research
So I just wanted to talk a little bit about Udemy Business and its seasonality and what you're seeing in kind of your guidance. What I mean by this is, you've basically been having a layering effect and you've been adding -- the 2 last quarters -- this quarter about 7.4 million over Q3. Q3 is a little over 8 million, and it's kind of been layering up. You've been cycling up from earlier in the year and from last year.
But in your guide -- and I know you said 70-plus percent, and you didn't fully break it out, so that might mean it. So this 70%, it means a pretty big step-down in that layering. Is there any sort of seasonality that we should be aware of on 1Q? Or how this business should work on when you win customers and when the revenue flows through?
Sarah Walter Blanchard - CFO
Great question, Matt. Yes, there is seasonality in our business. Like many enterprise SaaS companies, we do tend to have our biggest quarter, it's Q4. We had a great Q4. We had a great amount of closes in December. And you do tend to see that the stabilization then happens again in Q1, and then you continue to grow throughout the year. So I think, nothing abnormal. The buying cycle really is in Q4 for many enterprises. We work as hard as we can to even it out throughout the year, but I think that's a secret sauce that most enterprise SaaS businesses haven't figured out.
Nathaniel Holmes Schindler - Director in Equity Research
But wouldn't that layering on a lot of new customers in Q4 mean real growth in Q1? Because those customers didn't come in the beginning of October in Q4. They came throughout Q4, and thus, they are now a full quarter's worth of revenue in Q1.
Sarah Walter Blanchard - CFO
Yes. So we layered on a lot of customers. I think customer size is also something. We have a lot of people who are just coming into team plan on their own, and so that growth rate of the customers can also be attributed to different type of customers. I will say our average deal size is growing every quarter. The ARR per logo is going up, and we do expect that trend to continue.
Nathaniel Holmes Schindler - Director in Equity Research
Okay. Totally different than on -- still asking about Udemy Business, and just going on a longer-term basis and kind of more what's going on strategically. How do -- why have customers left -- that have left or cut down their spend -- on Udemy Business that have cut down spend, what is really -- what happened? Is it, do they look for competitive offerings sometimes? Or do they just say they don't need it as much, if this happens?
Gregg Andrew Coccari - President, CEO & Chairperson of the Board of Directors
Yes. So our retention is much higher on corporations that are over 1,000 employees. So the bigger the corporations, the longer they stay and the higher the net retention. There's lots of reasons why people leave. There's -- we have a huge small business segment, and so -- and there's a lot of churn that happens in that. We have a team plan, so we get all these customers that come in. And they're small, 5 to 20 seats. And there's more churn going on there than would be normal. Managed accounts have much lower churn.
But there's just a very -- a wide variety of reasons. Competition is always part of it but not the biggest part. It's businesses either are doing well or have decided to do other things. So it's not -- Sarah, what's your...
Sarah Walter Blanchard - CFO
Yes. I mean, we'll see, some I'd say -- with budget issues. The one thing I do want to mention is our net dollar retention is 118% across all of our customer segments. But for our larger customers, it's well above 120%. So we tend not to see the larger customers that we're supporting with our customer success teams. And aligning with them on what their business goals are and partnering with Udemy, we tend not to have much churn there. But once in a while, competition, not as often, and sometimes just budget reasons.
Nathaniel Holmes Schindler - Director in Equity Research
Makes sense. And then just to clarify one last thing. What percentage of the Udemy Business revenue is from customers over 1,000 employees versus the smaller customers? And just round figures if you don't want to give out a total.
Sarah Walter Blanchard - CFO
It's a pretty good portion. I don't want to give out an exact number, but we have a lot of really large customers more and more. I think you probably heard in our prepared remarks that we signed our first deal that's over $5 million. So the amount of ARR coming from enterprise-sized customers is growing faster.
Operator
I'm showing no further questions at this time. I'd like to turn the call back over to Gregg Coccari to close the call.
Gregg Andrew Coccari - President, CEO & Chairperson of the Board of Directors
I just want to thank everybody for their time and asking very nice questions.
I appreciate you looking at Udemy. We're very excited about our business. We think we have an extraordinary opportunity in the marketplace, and I hope that you'll be seeing that over the next few quarters.
Operator
Thank you. Ladies and gentlemen, this does conclude today's conference. Thank you all for participating. You may now disconnect. Have a great day. Goodbye.