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Operator
Good afternoon, and welcome to the F5 first-quarter financial results conference call.
At this time, all parties will be able to listen-only until the question-and-answer portion.
Also, today's conference is being recorded.
If anyone has any objections, please disconnect at this time.
I'd now like to turn the call over to Mr.
John Eldridge, Director of Investor Relations.
Sir, you may begin.
John Eldridge - Director IR
Thanks, Carol, and welcome to all of you to our conference call for the first quarter of fiscal 2012.
Speakers on today's call are John McAdam, President and CEO of F5, Andy Reinland, Senior Vice President and Chief Finance Officer, other members of our exec team are also with us to answer questions following the prepared comments.
If you have questions after today's call, please direct them to me at 206-272-6571.
If you don't have a copy of today's press release, it's available on our website, F5.com.
In addition, you can access an archived version of today's live webcast from the Investor Relations events calendar page of our website through April 18th.
From 4.30 today, until midnight Pacific time, January 19th, you can also listen to a telephone replay at 800-219-6381, or 402-220-3807.
During today's call, our discussion will contain forward-looking statements which include words such as believe, anticipate, expect, and target.
These forward-looking statements involve risks and uncertainties that may cause our actual results to differ materially from those expressed or implied by these statements.
Factors that may affect our results are summarized in our quarterly release, and described in detail in our SEC filings.
Before we begin, I also want to remind you that F5 has no duty to update any information presented in this call.
Now I'd like to turn the call over to Andy Reinland.
Andy Reinland - SVP and CFO
Thank you, John.
For the first quarter of fiscal 2012, F5 achieved sequential revenue gains and solid year-over-year growth, exceeding both revenue and earnings guidance.
Revenue of $322.4 million which exceeded the high end of our $315 million to $320 million guided range, grew 2.5% from the prior quarter and 20% year-over-year.
GAAP EPS of $0.83 per diluted share was above our guided range of $0.79 to $0.81.
Excluding stock-based compensation expense, non-GAAP EPS of $1.03 per diluted share was also above our guided range of $0.99 to $1.01.
Product revenue of $196.6 million grew 15% year-over-year, and represented 61% of total revenue.
Service revenue of $125.9 million grew 29% year-over-year, and accounted for 39% of total revenue.
Book-to-bill for the quarter was greater than 1.
On a geographic basis, all regions contributed to the Company's solid year-over-year growth.
Accounting for 59% of the total, revenue from the Americas grew 20% from the first quarter of fiscal 2011.
EMEA, which represented 21% of revenue, grew 14% from the first quarter of last year.
APAC accounted for 14% of revenue, and grew 28% year-over-year, and Japan contributed 6% of revenue, a 22% increase year-over-year.
During Q1, our Application Delivery Networking business contributed $316.9 million.
This compares to $307.3 million in Q4, and $261.7 million in the first quarter a year ago.
Revenue from our ARX file virtualization business was $5.5 million, compared to $7.3 million in Q4, and $7.2 million in Q1 of last year.
Telco was our strongest vertical in Q1, representing 23% of total sales.
Financial was 21%, technology, 17%, and government was 9%, including US federal, which accounted for 4% of the total.
In Q1, we had two greater-than 10% distributors, Avnet which represented 17.9% of total revenue, and Ingram Micro, which accounted for 13.7%.
Driven by exceptional strength in software sales, our GAAP gross margin in Q1 was 82.8%.
Excluding approximately $2.5 million of stock-based compensation expense, non-GAAP gross margin was 83.5%.
GAAP operating expenses of $167 million were above our target range of $161 million to $165 million.
Excluding $19.6 million of stock-based compensation expense, non-GAAP operating expenses were $147.5 million.
GAAP operating margin was 30.9%.
Our non-GAAP operating margin, which excludes stock-based compensation expense, was 37.8%.
Our GAAP effective tax rate for Q1 was 34.6%.
Excluding stock-based compensation, our non-GAAP effective tax rate was 33.6%.
Turning to the balance sheet.
Cash flow from operations was $131.9 million, contributing to total cash and investments of $1.1 billion at quarter end.
Free cash flow for the quarter was $126 million.
Capital expenditures for the quarter were $5.9 million, and depreciation and amortization expense was $5.8 million.
DSO at the end of Q1 was 52 days.
Inventories were $17.5 million.
Deferred revenue increased 11% sequentially to $380 million.
We ended the quarter with approximately 2,615 employees, an increase of 125 from the prior quarter.
During Q1, we repurchased approximately 320,000 shares of our common stock, at an average price of $107.65 per share, for a total of $34 million.
Approximately $332 million remains authorized under the current share repurchase program.
Looking ahead to Q2, based on our solid year-over-year growth, the strength of our pipeline, and the productivity of our sales organization, we believe F5 will continue to generate sequential revenue growth throughout fiscal 2012.
We remain confident in achieving revenue growth of at least 20% for fiscal year 2012, and expect to see acceleration in year-over-year product revenue growth in the current quarter.
Our revenue target for the second quarter of fiscal 2012 is $332 million to $337 million.
We expect GAAP gross margin in the 82% to 83% range, including approximately $2.5 million of stock-based compensation expense.
We anticipate GAAP operating expenses in the range of $170.5 million to $174.5 million.
This includes approximately $20.5 million of stock-based compensation expense.
Our GAAP EPS target is $0.84 to $0.86 per diluted share.
Excluding stock compensation, our non-GAAP EPS target is $1.05 to $1.07 per diluted share.
We are forecasting an effective tax rate of 35%.
Excluding stock-based compensation, we expect a non-GAAP effective tax rate of 33.5%.
We plan to increase our headcount by more than 125 employees in the current quarter.
We estimate our DSO will be in the upper 40-day range.
We expect inventory levels within a range of $19 million to $21 million.
And we believe our cash flow from operations will be in excess of $100 million, reflecting a large sequential increase in our federal tax payments, as is customary in our fiscal second quarter.
With that, I will turn the call over to John McAdam.
John McAdam - President, CEO
Thanks, Andy and good afternoon, everyone.
I was very pleased with our Q1 results, which have given us a solid start to fiscal 2012.
All major regions met or exceeded our internal sales forecast.
From a sales bookings perspective, North America produced solid year-over-year growth.
A relatively weak performance in our federal business was more than compensated for by strong performances in both our North American enterprise and service provider businesses.
I was also pleased with our results in APAC and EMEA, and especially in Japan, where we continued to see improvement in deal sizes and the current penetration.
Our services business had another excellent quarter, exceeding both revenue and profit goals as well as posting a very significant increase in deferred revenue of approximately $37 million.
Sales of the new mid range VIPRION 2400 products were very strong in the quarter and sales from the entire VIPRION family almost tripled from a year ago.
The combination of VIPRION sales and the increase in our software module attach rate have been major factors in maintaining deal sizes at record levels.
TMOS Version 11 continues to gain traction, with a lot of interest in features like vCMP for multiple software licenses and iApps for application optimization and deployment.
The iApp functionality in V11 is proving to be very popular with our customers, especially for those deploying Microsoft's Exchange and SharePoint applications.
One example of the power of iApps is a customer who, prior to the introduction of iApps, needed a full week to set up an Exchange environment within the network.
By using an iApp, the same customer has reduced the setup time to only five minutes.
iApps give our customers the ability to access the full capabilities and power of our products, which we believe will generate additional deployments and sales opportunities.
We also opened a second Technology Center in London during the quarter, to complement our facility in Seattle.
F5 technology centers enable our customers and prospective customers to see how F5 products will operate in their own networking environments.
I'm very pleased with the number of customer engagements that have already occurred at the London Technology Center and I believe it is a great showcase for power and effectiveness of our solutions.
iApps are the most-frequently requested demo from people visiting the Technology Centers.
In addition to the growth we have enjoyed with our hardware-based solutions, I'm also very pleased with the sales of software-only virtualizations of our products, which have increased 149% year-over-year.
F5 has introduced the most comprehensive set of virtual product additions in the market, and I believe this has enabled us to significantly expand our addressable market and offer new and exciting capabilities to our customer base.
We also saw strong sales momentum with our security products during the quarter.
Our Application Firewall solution, the ASM module, had its best-ever quarter and we also experienced good sequential growth with our Edge Gateway and APM Access Solutions.
We achieved some important milestones with our security strategy last quarter, including ICSA, network firewall certification for TMOS Version 11.
F5 was also positioned in the leaders' quadrant of Gartner's Magic Quadrant for SSL VPNs.
You may also have seen our recent press release announcing that our BIG-IP Edge client has the industry's first SSL VPN solution that provides comprehensive security and mobile access for all devices running Android 4.X operating systems.
F5's free downloadable client enhances mobile user productivity by providing accelerated client access to corporate resources via a full SSL VPN connection.
We have already announced similar functionality for the Apple iOS iPhone environment.
TMOS Version 11.1 was released in the quarter, and included a number of features specifically designed for the security market and our telco and service provider customers.
Version 11.1 also included a trial version of our VPI functionality.
Over the next few quarters, we will be expanding these features to include full VPI capability, advanced telco-oriented I-rules, DNS caching and other features requested by our telco and service provider customers.
Upcoming product releases includes the new Centaur Blade for the VIPRION 4400 platform, which will double the performance of the current high-end PB200 VIPRION Blades.
We believe this new platform will be the highest-performing ADC currently available.
An eight-slot version of this platform is expected later in the year and will double the performance of the Centaur Blade platform.
As we mentioned at the analyst investor meeting in November, we will start a refresh of our 1U and 2U appliances this year, leveraging the technology was that developed for the VIPRION 2400.
With our Virtual Edition, we now support Xen and Hyper-V hypervisors.
All our software modules will be supported as virtualizations this year, and we are continuing to develop new features for our centralized management system to better support application scalability in cloud environments and virtualized data centers.
Finally, towards the end of the calendar year, we expect to deliver significant new security capabilities with our Topaz project, including a network firewall, protocol protection and enhanced DDoS and application security.
F5 solutions are being used more and more in data centers throughout the world as strategic control points to secure and optimize mission-critical applications.
With our expanding addressable market in areas like security and service providers, we intend to continue to aggressively invest in our sales resources, services business, and our development facilities.
As far as the outlook is concerned, Andy indicated that we expect to see continued sequential growth in the current quarter.
As we mentioned at the start of the year, one of our important financial objectives is to deliver accelerating product revenue growth.
Assuming no major change in the macroeconomic environment, we expect to deliver product revenue growth acceleration in this current quarter.
We also continue to target year-over-year total revenue growth of at least 20% in fiscal 2012.
Our current pipeline of business is very strong, and with our technology leadership position, we enjoy world-class competitive win rates at all our major markets.
As I mentioned earlier, we believe that TMOS V11 and new products like the VIPRION 2400 will continue to be key growth drivers throughout fiscal 2012.
The F5 team should be proud of the great start we've made in fiscal 2012.
I'd like to take this opportunity to thank the entire F5 team and our partners, and look forward to their continued support throughout the year.
So with that, we'll now hand the call over for Q&A.
Operator
Thank you.
We will now begin the question-and-answer session.
(Operator Instructions).
Our first question is from Paul Silverstein, Credit Suisse.
Your line is open.
Paul Silverstein - Analyst
Thanks.
John, Andy, can you all talk about visibility and linearity in the quarter, and how your visibility looks today compared to perhaps 90 days ago?
Andy Reinland - SVP and CFO
Yes, I think it's very comparable to 90 days ago.
We usually talk about for the current quarter, we get down to the deal level and I think we have good visibility on that.
And then even six months or two quarters out, we still think the visibility's pretty good.
I don't think it's changed markedly.
John McAdam - President, CEO
The seasonality was pretty normal for quarter one as well.
There was nothing extraordinary there.
Operator
Thank you.
Our next question is from Tal Liani, Bank of America-Merrill Lynch.
Your line is open.
Tal Liani - Analyst
I want to ask about deferred revenues.
Deferred revenues went up pretty nicely year-over-year and sequentially.
Can you elaborate on what's behind it?
Is it mainly service renewal timing?
Is it seasonal, or did you see also growth beyond seasonality?
Thanks.
John McAdam - President, CEO
Yes, the deferred revenue, the end of this quarter is the end of the calendar year, so we do see a large bookings quarter every Q1 going back over time, but this was a very good quarter.
No exceptional deals in there, just keep chasing every piece of renewal business down that there is.
Andy Reinland - SVP and CFO
And it is almost all maintenance contracts.
Operator
Thank you.
Our next question is from Alex Kurtz, Sterne Agee.
Your line is open.
Alex Kurtz - Analyst
Thanks for taking the question.
So as the 2400 gets more traction the next couple of quarters here, how should we think about transaction size and gross margin profile, and how that sort of impacts the rest of the product line?
John McAdam - President, CEO
Yes, this is John here.
We're not indicating that we expect to see a better gross margin profile, but we'll see.
And the reason I say that is that obviously with the VIPRION 2400, there is much more opportunity to add software solutions.
First of all, vCMP, which is new, which has got license price associated with it; I mentioned in my introduction that we're seeing a strong interest in that.
So by definition there, we're going to see more software on the 2400 platform.
And then the factors, the more performance functionality, leads us to believe there will be more module attachments, because that's what we started to see last quarter.
But we're not giving any numbers out on that.
We just think it's certainly going to be a good trend.
Operator
Thank you.
The next question is from Ryan Hutchinson, Lazard.
Your line is open.
Ryan Hutchinson - Analyst
So I guess my question's on telco.
Clearly, you indicated strength there.
I know you touched on it, John, with respect to the demand there, but maybe if you could flesh that out and with respect to Version 11, is the new opportunity starting to hit stride there?
You talked about it at the Analyst Day.
You gave us some evidence of lab trials.
I think what the investment community is really trying to get their arms around is with respect to that 20% growth target, and how much of that is related to mobile being a piece of that.
And really, your ability to physically sit behind the Evolved Packet Core or the GDSN, et cetera, over time and then evolve the business from where you are today to potentially where you're going, I think any commentary across the board with respect to that strategy would be very helpful.
I know it's been asked several times over the last several calls, but never really answered in a definitive way, and I think that's, I think, really what's key to people's understanding of why you guys can grow, in a lot of respects to what people believe is a saturated market.
Thank you.
John McAdam - President, CEO
Yes.
I think we've maybe always said this, but maybe not -- maybe it's not been that clear.
First of all, as data increases within the service provider networks, pure data and obviously LTE will increase that dramatically, and clearly mobile data is increasing it dramatically as well.
As that increases, our potential for optimization increases dramatically.
That is a core key driver for us.
And the other thing to think about our business is that -- in fact, we said this before as well.
We don't intend to be looked upon as the plumbing that's put in as networks are being built, we do get involved in that architecture.
However, as the data's increasing and the complexity's increasing and there's more need to massage that data, to monetize it, that's when our products really come into their own and clearly VIPRION, the chassis has been very, very popular there.
The other areas within the service provider space, and maybe Karl, you can call on it, like firewall has been very strong as well.
Karl Triebes - CTO, SVP Product Development
One of the big benefits of the VIPRION is we're able to consolidate a lot of features and functionality.
One of the things that we've been asked by a lot of the service providers to date is enhancing our firewall capabilities and this includes having performance, having some very fundamental things that are better rules-based language and then some management functionality behind that.
That's what we talked about at the Analyst Day.
That continues to progress.
There's a lot of other things too.
The other piece is iRules.
We get involved a lot with helping scale various parts of their infrastructure, including things such as Diameter or SIP, or some of the other protocols that are running there.
We also get called upon to do things like traffic steering, and traffic steering is based upon content in the connections.
So VIPRION's really good at that, and our infrastructure's very good at that, and with the performance it's just a natural thing to be placing behind either the PGW or the GGSN nodes and their infrastructure.
Mark Anderson - SVP - Worldwide Sales
And Ryan, this is Mark Anderson.
We talked in November at the analyst meeting about the major use cases for telco, and these are just priorities for these guys.
They're delaying spending on a lot of other places, obviously investing in LTE around the world.
But these use cases are priorities, because it's allowing a much more optimized use of their infrastructure to process the dramatic growth in data.
Operator
Thank you.
Sanjiv Wadhwani, Stifel Nicolaus, your line is open.
Sanjiv Wadhwani - Analyst
Just curious, in talking about acceleration in product growth in Q2, are you seeing that specifically in your pipelines, or is this really the extension of the 2400 continuing to gain more and more traction?
John McAdam - President, CEO
It's both.
So we expect the 2400 to gain more and more traction.
We expect Version 11 to gain more and more traction as we do with verticals, like security solutions as well, but that is based upon a bigger pipeline.
And I mentioned, our pipeline is very strong at the moment.
I think we've taken an appropriately cautious view of the close rates and the fact of pipeline, given the potential risks in the economy.
But the pipeline is extremely strong right now.
Operator
Thank you.
Alex Henderson, Miller Tabak, your line is open.
Alex Henderson - Analyst
I was hoping we could talk a little bit more about the security piece of your business.
Obviously, you've been making a lot of investments there and doing a lot of work in that segment.
It also seems quite clear that the technology is moving up the stack from the packet layer, up into the application layer, where your skill sets are uniquely qualified.
Can you talk a little about the context around application management within the virtualization layer, and how that impacts -- how you set those up relative to those same parameters being utilized within the context of the security management process, and if there's any way to integrate across those two features.
Dan Matte - SVP - Marketing and Business Development
Alex, this is Dan.
So a couple different angles to that.
One is that you're absolutely right, the desire for security functionality is traveling up the stack, so people want more understanding of context, not only who the user is, where they're coming from, which application they're accessing, and what security policies are applicable for that particular application in that scenario.
I think we're pretty uniquely positioned to be able to deliver on that, one, because the number of application-level decisions per second to achieve that is very, very high, and that plays right into our wheelhouse.
And then to follow on into the virtual conversation, and portion of your question.
As these applications begin to travel around within people's networks and data centers, it becomes important to have those policies follow them, and so what we're up to is absolutely having a way for our functionality to follow those applications, be paired with them, so that those policies do work out.
And really in terms of what we're up to, and sort of the permission that we have from our customers, they see that security portion of what we do as just a natural extension of our abilities, and things that we offer them.
So they're looking for us to provide those solutions.
So sort of beginning innings in terms of having stuff traveling around and being paired up on the virtual front, but you can expect to see much more from us in that area.
Operator
Thank you.
Brent Bracelin, Pacific Crest, your line is open.
Brent Bracelin - Analyst
Thank you.
Wanted to actually ask a follow-up around VIPRION.
Sales tripled here year-over-year, and trying to understand what's driving a mix shift to chassis versus appliance.
Are customers pulling you into new application environments that need a more faster, higher throughput box?
Is it just the 1U, 2U appliances are a bit stale, and when that refresh happens you expect to see a more balanced view?
Help us understand what's driving the VIPRION momentum, and if there's a bigger trend going on that can explain why that business is tripling for you versus the traditional appliance business.
Karl Triebes - CTO, SVP Product Development
Hi, Brett, this is Karl.
Part of it is the service provider business, obviously.
As they're scaling their infrastructure, that's putting increasing demand, as John mentioned in his script, for the VIPRION placement.
And if we penetrate more into those accounts, we're also doing more advanced things, in terms of how we're working with traffic, providing security features and functionality and other things, and so that just puts more demand on capacity, and so I think part of it's that.
I think part is our support for vCMP and some of our other functionality around iApps, because we're able to slice up their infrastructure and be able to provide different virtuals with BIG-IP and so that's attractive, because you can reduce the number of appliances you need to put around there.
Also, just to note, our revenue grew both for the 2400s and the 4400s.
It wasn't just one or the other.
That encompasses both when we talk about VIPRION.
Really, it's traffic.
It's also security and other applications are getting attached and I think telco, obviously.
John McAdam - President, CEO
And also, not to miss it, massive price-performance increase.
Karl Triebes - CTO, SVP Product Development
Yes.
John McAdam - President, CEO
The actual price-performance is dramatic as to where the 2400 fell versus the existing range of products.
Operator
Bill Choi, Janney Montgomery Scott, your line is open.
Bill Choi - Analyst
Okay.
Thanks.
Continued growth in gross margins over the past several quarters, fairly impressive, particularly considering the product revenue decline.
I wonder if you could kind of rank order what's driving some of the gross margin expansion.
You obviously have a Virtual Edition which is going to be very high gross margins.
You talk about higher attach rates with the modular form factor.
I forget what quarter it was, but somewhere in the past, you had talked about 30% attach rate.
If you could update that, and whatever else might be really moving this gross margin forward.
Thanks.
John McAdam - President, CEO
Bill, you really answered the question there during the question.
Software attach rates is significant.
There's no question about that.
And the fact that we've got more power within the hardware solutions to add more software, and you mentioned vCMP, which is obviously really taken up by the customer, and then the Virtual Edition as well, and we talked about the growth, the year-over-year growth in that.
There's no question there's been a mix shift in terms of software that's helped our gross margin.
Operator
Thank you.
Troy Jensen, Piper Jaffray, your line is open.
Troy Jensen - Analyst
Congrats on the nice quarter, gentlemen.
Follow-up on the 2400 here.
Could you talk about -- I guess I'd be curious to know if lead times extended throughout the quarter, and if you're entering Q2 with more backlog for that product than maybe you thought?
Can you give us a sense for how much of the sales of 2400 are into telco versus enterprise.
Andy Reinland - SVP and CFO
Yes.
So to your question about lead times, I don't think our lead times for any of our platforms extended during the quarter at all and I actually don't know the answer to the makeup of the backlog but I don't think it's anything different than normal to highlight there.
John McAdam - President, CEO
I think it's -- the 2400 is similar to the rest of our product line in terms of our ability to ship it.
In terms of telco versus enterprise, I'm not sure we've got that data.
Typically in the service provider space, the 4400, the higher one's been more popular.
But that's more -- I don't have the data behind that.
Most of the 2400 is probably swaying towards security, swaying toward the enterprise at the moment, and that's something we'll maybe check for the next call.
Operator
Thank you.
Jeff Kvaal, Barclays Capital, your line is open.
Jeffrey Kvaal - Analyst
Yes, I was wondering if we could delve into visibility into a couple of the areas that we have all had some concern about given the headlines.
How much comfortable are you feeling with your visibility and pipeline in Europe?
Sounds like telco you feel fine.
But then again also in federal.
Thank you.
John McAdam - President, CEO
Yes, the visibility generally we feel good about and that -- if you look at the sheer volume and we look at the factor pipeline and we look at the close rates that we are applying to that; that feels good to us.
We don't see any red flags there at all.
Federal, of course, the visibility there is not so good.
But hoping that it gets better as we get through the year but we did see delays in projects that we've already won.
We know we're going to get the business, but the actual purchase order didn't come out and federal was a little bit disappointing on that basis.
So I think it's too early to say the visibility in federal has jumped up completely.
But the other side of the coin is, it was only 4% of our business and I'm not quite sure we're a bellwether in the federal vertical, but that's what we're seeing.
The rest of the business we feel good.
As Andy said, we always feel pretty good about our visibility on a quarterly basis with our factor pipeline and our assumptions there and the forecasting mechanism that we've got with the sales force.
We feel reasonable about our six months profile in terms of the way the business is shaping up, and then it gets more cloudy as you go beyond the six months.
That's no -- in other words, there's no major change, really, in the visibility.
Operator
Mark Sue, RBC Capital Markets, your line is open.
Mark Sue - Analyst
John, if you think about the year in total, what do you think will be the biggest contributor in terms of dollar value that gets you to 30% growth this year?
Is it telco, security and then virtualization in that order, or is it more confidence coming from a big upgrade from your existing core customers?
John McAdam - President, CEO
You've got me smiling again.
Yes, so we basically have a goal of at least 20% growth for this fiscal year.
I do believe actually that Version 11, the core Version 11 that we've done with the feature sets that we've got there, the trends in service provider in terms of the data, the acceptance that we're now seeing our customers, in terms of us being a security player, I really think they're going to play out this year, and they certainly played out in the quarter.
So I think as we look back, I think that's what you're going to see.
You're going to see strong 2400 with no real competition against it.
I think that toward the end of the year as we refresh the low end, we should see some opportunity there as well.
Operator
Thank you.
Simon Leopold, Morgan Keegan, your line is open.
Simon Leopold - Analyst
Thank you.
I wanted to maybe follow on in terms of your growth outlook.
Let's go with the 20% or greater assumption.
How much of that do you see driven by the market adjacencies?
Particularly you've talked quite a bit about security, a little less about things like WAN optimization.
But I'm trying to get my hands around how big those are in your assumptions as contributors to this growth rate.
Thank you.
John McAdam - President, CEO
We don't typically break out, for example, what we've done within the security space in the quarter.
We did say that the application firewall revenues were the best ever.
And we did say that we saw good sequential growth in our access technology like APM and Edge Gateway and they are significant.
They are non-trivial in terms of growth and as a percentage of the revenue that we do.
But then you get into the subjective area in security where we may be putting in a large 2400 installation to do, as an application firewall that's also doing WAN optimization and also is doing application optimization.
And that gets quite subjective in doing that.
So that's why we tend not to give specific numbers.
But the ASM, with security-only type solutions, the access, they're very important.
John Eldridge - Director IR
Carol, this is John Eldridge.
We're going to take two more questions and wrap it up.
Operator
Thank you.
The next question will be from Brian Modoff, Deutsche Bank, your line is open.
Brian Modoff - Analyst
Okay, John.
Let's try that a different way.
Let's look at on the security side, the ASM module, what do you think your attach rate is with your installed base, and what do you think it can be over time in terms of the adoption?
What's the feedback you've gotten from your client base with regard to your proposal on the application layer?
John McAdam - President, CEO
Brian, you know we don't give out the attach rates as specifics over modules.
To give you an idea, if you look at the larger account base that we've got and you look at the geographies, ASM has been very, very strong in Europe.
It's becoming stronger and stronger in North America.
The sales force and the SE force are becoming much more security savvy.
You may have seen we hired a new person on the team, Manuel Rivelo, and that's his goal, was to push that security throughout the sales force and optimize the solutions.
It's pretty critical, but we don't give the actual [type] range.
Mark Anderson - SVP - Worldwide Sales
For certain, the priority for spending is going to security for a lot of these enterprise customers, and I think now more than ever, our competitiveness in these different businesses has never been stronger.
So feature parity or superiority is pretty clear across the board for us.
John McAdam - President, CEO
And just closing, an obvious statement on security is that security is really -- it's becoming right at the forefront of our customers.
So we're really at the right time here in terms of the application solution that we have.
Manuel Rivelo - SVP - Security and Strategic Solutions
I'll just add something to that, John, this is Manny.
What we're seeing from the customer base across the board, and we've seen a lot of examples of it this week, just with the denial of service attacks and some of the breaches that have happened for some of the major corporations, application vulnerability is at an all-time high, and all of our customers are seeing that.
So the ASM module has become front and center for all of them.
It's industry-leading performance, capabilities and as a result of that we're seeing a lot of traction.
It's relatively new in the market in the sense that application firewalls are not well understood, so there's a market awareness also that's occurring.
But we're seeing that at all major, major accounts, and we expect to have future success there.
Operator
Thank you.
Our last question comes from Rohit Chopra, Wedbush Securities.
Your line is open.
Rohit Chopra - Analyst
Thank you.
I wanted to ask you just quickly back to telco.
It was down sequentially.
And I just want to get a sense of what you saw the carriers doing or major service providers doing in the quarter.
And when you talk about pipeline, John, being strong, does that mean that telco is sort of rebounding in the upcoming quarter?
John McAdam - President, CEO
I'm not giving you a specific of that.
Let me just do the pipeline.
Telco is very important to our pipeline.
There's no doubt about that.
And we do see some really large projects out there, but by nature, given that they're large projects, you can see some lumpiness.
The pipeline as we look forward in service provider, we feel very good about that.
We think we're definitely making progress in terms of identifying the solutions that we really bring to the market that are very, very core to the business of telcos so that's very important.
Andy Reinland - SVP and CFO
And Rohit, we've talked in the past about for our business in particular, at F5, that Q4 usually in the telco space is seasonally down.
So if you look at the last two Q1s for us, it was 21% and 21%.
So actually, the sequential down is in line with our expectations, but a better quarter than we historically see in Q4.
John Eldridge - Director IR
Okay.
Thank you very much.
We look forward to seeing all of you at some point out on the road in the next quarter or two, and we appreciate you joining us for today's call.
Operator
Thank you.
This concludes today's conference.
Thank you for your participation.
You may disconnect at this time.