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Service Virtualization Solves Quality and Performance
Bottlenecks Amid Complex Ecosystem-Wide Billing
Processes for German Telco
Transcript of a BriefingsDirect podcast on how a large telco has optimized the testing and
development procedure with tools from HP.
Listen to the podcast. Find it on iTunes. Sponsor: HP

Dana Gardner: Hello, and welcome to the next edition of the HP Discover Performance
Podcast Series. I'm Dana Gardner, Principal Analyst at Interarbor Solutions, your host and
moderator for this ongoing discussion of IT innovation and applications transformation.
Once again, we're focusing on how software testing improvements and advanced servicevirtualization solutions are enabling IT leaders to deliver better experiences for
businesses and end users alike.
Today, we’re here to learn how German telco EWE has solved performance
complexity across an extended enterprise billing process by using service
virtualization. In doing so, EWE has significantly improved applications
performance and quality for their end users, while also gaining predictive insights
in the composite application services behavior.
Here to explain, how EWE is leveraging service-virtualization technologies and techniques,
we're joined by Bernd Schindelasch, Leader for Quality Management and Testing at EWE TEL
based in Oldenburg, Germany. Welcome to BriefingsDirect, Bernd.
Bernd Schindelasch: Hi, Dana. Thank you for having me.
Gardner: We’re glad you’re here. First, tell us a little bit about EWE TEL, what it does and
what you do there.
Schindelasch: EWE is a telecommunications company. We operate the network for EWE and we
provide a large range of telecommunications services. So we invest a lot of money into
infrastructure and we supply the region with high-speed Internet access. EWE TEL was founded
in 1996, is a fully owned subsidiary of EWE, and has about 1,400 employees.
Gardner: I was going to ask how your software and IT systems are so important. This must be a
big deal for you to keep those applications performing. This is, in a way, how you interact with
your end-users.
Schindelasch: Yes, indeed. Our IT systems are very important for us to fulfill our customers’
needs. We have about 40 applications, which are involved in the process of a customer, starting
from customer self-service application, to the activation component, and the billing system. It’s a
quite complex infrastructure and it’s all based on our IT systems.
Gardner: What have you done over the past several years to put together a team or a process
through which you can make sure that your applications are performing and continue to perform
time and time again?
Schindelasch: We have a special situation here. Because the telecommunications business is
very specialized, we need very customized IT solutions. Often, the effort to customize standard
software is so high that we decided to develop a lot of our applications on our own.

Developed in house

Nearly half of our applications are developed in house, for example, the customer self service
portal I just mentioned, or our customer care system or Activation Manager.
We had to find a way to test it. So we created a team to test all those systems we
developed on our own. We recruited personnel from the operating departments
and added IT staff, and we started to certify them all as testers. We created a whole
new team with a common foundation, and that made it very easy for us to agree on
roles, tasks, processes, and so on, concerning our tests. 
Gardner: Today, we’re interested in hearing about how you adopted service virtualization as a
technology and a process. Tell me about the problem that led you to discover service
virtualization as a solution?
Schindelasch: When we created this new team, we faced the problem of testing the systems end
to end. When you have 40 applications and have to test an end-to-end process over all of those
applications, all the contributing applications have to be available and have to have a certain
level of quality to be useful.
What we encountered was that the order interface of another service provider was often
unavailable and responses from that system were faulty. So we hadn’t been able to test our
processes end to end.
We once tried to do a load test and, because of the bottleneck of that other interface, we
experienced the failure of that other interface and weren’t able to test our own systems. That’s
the reason we needed a solution to bypass this problem with the other interface. That was the
initial initiative that we had.
Gardner: I think you’re representative of many more companies that are dealing with extended
enterprise applications and services, ones they can’t fully control, can’t access, and can't get to,
but they have to continue to be responsible for the quality of the end process. It can be a quite
difficult problem to solve.
Why weren’t traditional testing or scripting technologies able to help you in this regard?
Schindelasch: We tried it recently. We developed diverse simulations based on traditional
mockup scripts. These are very useful for developers to do unit testing, but they weren’t
configurable for testers to be used to create the right situations for positive and negative tests.
Additionally, there was a big effort to create these mockups, and sometimes the effort to create
the mockup would have been bigger than the real development effort. That was the problem we
had.

Complex and costly

Gardner: So any simulations you were approaching were going to be very complex and very
costly. It didn't really seem to make sense. So what did you do then?
Schindelasch: We constantly analyzed the market and searched for products that might be able
to help us with our problem. In 2012, we found such solutions and finally made a proof of
concept (POC) with HP Service Virtualization.
We found that it supported different protocols, all the protocols we needed, and
with a rule set to predict the responses. During the POC we found that benefits
were both for developers and testers. Even our architects found it to be a good
solution. So in the end, we decided to purchase that software this year.
Gardner: Tell us how you’ve implemented HP Service Virtualization and how this pilot project
has proceeded?
Schindelasch: We implemented service virtualization in a pilot project and we virtualized even
that order interface we talked about. We had to integrate service virtualization as a proxy
between our customer care system and the order system. The actual steps you have to take vary
by the used protocols, but you have to put it in between them and let the system work as a proxy.
Then, you have the ability to let it learn.
It’s in the middle, between your systems, and records all messages and their responses.
Afterwards, you can just replay this message response or you can improve the rules manually.
For example, you can add data tables so you can configure the system to work with the actual
test data you are using for you test cases to be able to support positive and negative tests. 
Gardner: For those folks that aren’t familiar with HP Service Virtualization, how has this
developed in terms of its speed and its cost? What are some of the attributes of it that appeal to
you?
Schindelasch: Our main objective was to find a way to do our end-to-end testing to optimize it,
but we were able to gain more benefits by using service virtualization. We’ve reduced the effort
to create simulations by 80 percent, which is a huge amount, and have been able to virtualize
services that were still under development.
So we have been able to uncouple the tests of the self service application from a new technical
feasibility check. Therefore, we’ve been able to test earlier in our processes. That reduced our
efforts and cost in development and testing and it’s the basis for further test automation at low
testing cost.
In the end, we’ve improved quality. It’s even better for our customers, because we’re able to
deliver fast and have a better time to market for new products. 

Future attributes

Gardner: Are there other attributes that you’d like to see in future products, perhaps with
network-virtualization attributes? I know that you’ve been doing this with certain middleware,
messaging, and workflow technology. What would you like to see next?
Schindelasch: One important thing is that development is shifting to agile more and more.
Therefore, the people using the software have changed. So we have to have better integration
with development tools.
From a virtualization perspective, there will be new protocols, more complex rules to address
every situation you can think of without complicated scripting or anything like that. I think that’s
what’s coming in the future.
Gardner: And, Bernd, has the use of HP Service Virtualization allowed you to proceed towards
more agile development and, as well, to start to benefit from DevOps, more tight association and
integration between development and deployment and operations?
Schindelasch: We already put it together with our development, I think it’s very crucial to
cooperate with development and testing, because there wouldn’t be a real benefit to virtualize the
service after development already mocked up in an old-fashioned way.
We brought them together. We had the training for a lot of developers. They started to see the
benefits and started to use service virtualization the way the testers already did.
We’re working together more closely and earlier in the process. What’s coming in the future is
that the developers will start to use service virtualization for their continuous integration, because
service virtualization has the  potential to change the performance model, so you can let your
application answer slower or faster.
If you put it into fast mode, then you use it in continuous integration. That’s a really big benefit
for the developers, because their continuous integration will be faster and therefore they will be
able to deploy faster. So for our development, it’s a real benefit.
Gardner: I should think that for an organization like yours, where you’re a services provider,
being able to meet your service-level agreements (SLAs) is important to you. This could
probably have a very positive impact on that.
Schindelasch: Yes, definitely.

Lessons learned

Gardner: Before we end our discussion, I wonder if you could maybe offer some insights to
those who are considering the use of service virtualization now that you have been doing it. Are
there any lessons learned? Are there any suggestions that you would make for others as they
begin to explore new service virtualization in the testing phase?
Schindelasch: One thing I’ve already mentioned is that it’s important to work together with
development and testing. To gain maximum benefit from HP Service Virtualization, you have to
design your future solutions. What service do you want to virtualize, which protocols will you
use, and where are the best places to intercept? Do I want to replace real systems or create the
whole environment as virtualized? In which way do I want to use performance model and so on?
It’s very important to really understand what your needs are before you start using the tools and
just virtualize everything. It’s easy to virtualize, but there is no real benefit if you virtualize a lot
of things you didn’t really want. As always, it’s important to think first, design your future
solutions, and then start to do it.
Gardner: I am afraid we’ll have to leave it there. We’ve been learning how German telco EWE
has solved performance complexity across an extended enterprise billing process using HP
Service Virtualization. We have heard how EWE has significantly improved applications
performance and quality for their end users, while also gaining predictive insights in the
composite applications services behavior, even back into the development phases.
I’d like to thank our supporter for the series, HP Software, and reminder our audience to carry on
the dialogue through the Discover Group on LinkedIn. You can always access this and another
episodes in our HP Discover podcast series on iTunes under BriefingsDirect.
And so a big thanks to our guest. We’ve been joined by Bernd Schindelasch, Leader for Quality
Management and Testing at EWE TEL based in Oldenburg, Germany. Thank you so much,
Bernd.
Schindelasch: Thank you, Dana.
Gardner: This is Dana Gardner, Principal Analyst at Interarbor Solutions, your host and
moderator for this ongoing discussion on IT innovation. Thanks again for listening and come
back next time.
Listen to the podcast. Find it on iTunes. Sponsor: HP
Transcript of a BriefingsDirect podcast on how a large telco has optimized the testing and
development procedure with tools from HP. Copyright Interarbor Solutions, LLC, 2005-2013. All
rights reserved.

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Service Virtualization Solves Quality and Performance Bottlenecks Amid Complex Ecosystem-Wide Billing Processes for German Telco

  • 1. Service Virtualization Solves Quality and Performance Bottlenecks Amid Complex Ecosystem-Wide Billing Processes for German Telco Transcript of a BriefingsDirect podcast on how a large telco has optimized the testing and development procedure with tools from HP. Listen to the podcast. Find it on iTunes. Sponsor: HP Dana Gardner: Hello, and welcome to the next edition of the HP Discover Performance Podcast Series. I'm Dana Gardner, Principal Analyst at Interarbor Solutions, your host and moderator for this ongoing discussion of IT innovation and applications transformation. Once again, we're focusing on how software testing improvements and advanced servicevirtualization solutions are enabling IT leaders to deliver better experiences for businesses and end users alike. Today, we’re here to learn how German telco EWE has solved performance complexity across an extended enterprise billing process by using service virtualization. In doing so, EWE has significantly improved applications performance and quality for their end users, while also gaining predictive insights in the composite application services behavior. Here to explain, how EWE is leveraging service-virtualization technologies and techniques, we're joined by Bernd Schindelasch, Leader for Quality Management and Testing at EWE TEL based in Oldenburg, Germany. Welcome to BriefingsDirect, Bernd. Bernd Schindelasch: Hi, Dana. Thank you for having me. Gardner: We’re glad you’re here. First, tell us a little bit about EWE TEL, what it does and what you do there. Schindelasch: EWE is a telecommunications company. We operate the network for EWE and we provide a large range of telecommunications services. So we invest a lot of money into infrastructure and we supply the region with high-speed Internet access. EWE TEL was founded in 1996, is a fully owned subsidiary of EWE, and has about 1,400 employees. Gardner: I was going to ask how your software and IT systems are so important. This must be a big deal for you to keep those applications performing. This is, in a way, how you interact with your end-users.
  • 2. Schindelasch: Yes, indeed. Our IT systems are very important for us to fulfill our customers’ needs. We have about 40 applications, which are involved in the process of a customer, starting from customer self-service application, to the activation component, and the billing system. It’s a quite complex infrastructure and it’s all based on our IT systems. Gardner: What have you done over the past several years to put together a team or a process through which you can make sure that your applications are performing and continue to perform time and time again? Schindelasch: We have a special situation here. Because the telecommunications business is very specialized, we need very customized IT solutions. Often, the effort to customize standard software is so high that we decided to develop a lot of our applications on our own. Developed in house Nearly half of our applications are developed in house, for example, the customer self service portal I just mentioned, or our customer care system or Activation Manager. We had to find a way to test it. So we created a team to test all those systems we developed on our own. We recruited personnel from the operating departments and added IT staff, and we started to certify them all as testers. We created a whole new team with a common foundation, and that made it very easy for us to agree on roles, tasks, processes, and so on, concerning our tests.  Gardner: Today, we’re interested in hearing about how you adopted service virtualization as a technology and a process. Tell me about the problem that led you to discover service virtualization as a solution? Schindelasch: When we created this new team, we faced the problem of testing the systems end to end. When you have 40 applications and have to test an end-to-end process over all of those applications, all the contributing applications have to be available and have to have a certain level of quality to be useful. What we encountered was that the order interface of another service provider was often unavailable and responses from that system were faulty. So we hadn’t been able to test our processes end to end. We once tried to do a load test and, because of the bottleneck of that other interface, we experienced the failure of that other interface and weren’t able to test our own systems. That’s the reason we needed a solution to bypass this problem with the other interface. That was the initial initiative that we had.
  • 3. Gardner: I think you’re representative of many more companies that are dealing with extended enterprise applications and services, ones they can’t fully control, can’t access, and can't get to, but they have to continue to be responsible for the quality of the end process. It can be a quite difficult problem to solve. Why weren’t traditional testing or scripting technologies able to help you in this regard? Schindelasch: We tried it recently. We developed diverse simulations based on traditional mockup scripts. These are very useful for developers to do unit testing, but they weren’t configurable for testers to be used to create the right situations for positive and negative tests. Additionally, there was a big effort to create these mockups, and sometimes the effort to create the mockup would have been bigger than the real development effort. That was the problem we had. Complex and costly Gardner: So any simulations you were approaching were going to be very complex and very costly. It didn't really seem to make sense. So what did you do then? Schindelasch: We constantly analyzed the market and searched for products that might be able to help us with our problem. In 2012, we found such solutions and finally made a proof of concept (POC) with HP Service Virtualization. We found that it supported different protocols, all the protocols we needed, and with a rule set to predict the responses. During the POC we found that benefits were both for developers and testers. Even our architects found it to be a good solution. So in the end, we decided to purchase that software this year. Gardner: Tell us how you’ve implemented HP Service Virtualization and how this pilot project has proceeded? Schindelasch: We implemented service virtualization in a pilot project and we virtualized even that order interface we talked about. We had to integrate service virtualization as a proxy between our customer care system and the order system. The actual steps you have to take vary by the used protocols, but you have to put it in between them and let the system work as a proxy. Then, you have the ability to let it learn. It’s in the middle, between your systems, and records all messages and their responses. Afterwards, you can just replay this message response or you can improve the rules manually. For example, you can add data tables so you can configure the system to work with the actual test data you are using for you test cases to be able to support positive and negative tests. 
  • 4. Gardner: For those folks that aren’t familiar with HP Service Virtualization, how has this developed in terms of its speed and its cost? What are some of the attributes of it that appeal to you? Schindelasch: Our main objective was to find a way to do our end-to-end testing to optimize it, but we were able to gain more benefits by using service virtualization. We’ve reduced the effort to create simulations by 80 percent, which is a huge amount, and have been able to virtualize services that were still under development. So we have been able to uncouple the tests of the self service application from a new technical feasibility check. Therefore, we’ve been able to test earlier in our processes. That reduced our efforts and cost in development and testing and it’s the basis for further test automation at low testing cost. In the end, we’ve improved quality. It’s even better for our customers, because we’re able to deliver fast and have a better time to market for new products.  Future attributes Gardner: Are there other attributes that you’d like to see in future products, perhaps with network-virtualization attributes? I know that you’ve been doing this with certain middleware, messaging, and workflow technology. What would you like to see next? Schindelasch: One important thing is that development is shifting to agile more and more. Therefore, the people using the software have changed. So we have to have better integration with development tools. From a virtualization perspective, there will be new protocols, more complex rules to address every situation you can think of without complicated scripting or anything like that. I think that’s what’s coming in the future. Gardner: And, Bernd, has the use of HP Service Virtualization allowed you to proceed towards more agile development and, as well, to start to benefit from DevOps, more tight association and integration between development and deployment and operations? Schindelasch: We already put it together with our development, I think it’s very crucial to cooperate with development and testing, because there wouldn’t be a real benefit to virtualize the service after development already mocked up in an old-fashioned way. We brought them together. We had the training for a lot of developers. They started to see the benefits and started to use service virtualization the way the testers already did.
  • 5. We’re working together more closely and earlier in the process. What’s coming in the future is that the developers will start to use service virtualization for their continuous integration, because service virtualization has the  potential to change the performance model, so you can let your application answer slower or faster. If you put it into fast mode, then you use it in continuous integration. That’s a really big benefit for the developers, because their continuous integration will be faster and therefore they will be able to deploy faster. So for our development, it’s a real benefit. Gardner: I should think that for an organization like yours, where you’re a services provider, being able to meet your service-level agreements (SLAs) is important to you. This could probably have a very positive impact on that. Schindelasch: Yes, definitely. Lessons learned Gardner: Before we end our discussion, I wonder if you could maybe offer some insights to those who are considering the use of service virtualization now that you have been doing it. Are there any lessons learned? Are there any suggestions that you would make for others as they begin to explore new service virtualization in the testing phase? Schindelasch: One thing I’ve already mentioned is that it’s important to work together with development and testing. To gain maximum benefit from HP Service Virtualization, you have to design your future solutions. What service do you want to virtualize, which protocols will you use, and where are the best places to intercept? Do I want to replace real systems or create the whole environment as virtualized? In which way do I want to use performance model and so on? It’s very important to really understand what your needs are before you start using the tools and just virtualize everything. It’s easy to virtualize, but there is no real benefit if you virtualize a lot of things you didn’t really want. As always, it’s important to think first, design your future solutions, and then start to do it. Gardner: I am afraid we’ll have to leave it there. We’ve been learning how German telco EWE has solved performance complexity across an extended enterprise billing process using HP Service Virtualization. We have heard how EWE has significantly improved applications performance and quality for their end users, while also gaining predictive insights in the composite applications services behavior, even back into the development phases. I’d like to thank our supporter for the series, HP Software, and reminder our audience to carry on the dialogue through the Discover Group on LinkedIn. You can always access this and another episodes in our HP Discover podcast series on iTunes under BriefingsDirect.
  • 6. And so a big thanks to our guest. We’ve been joined by Bernd Schindelasch, Leader for Quality Management and Testing at EWE TEL based in Oldenburg, Germany. Thank you so much, Bernd. Schindelasch: Thank you, Dana. Gardner: This is Dana Gardner, Principal Analyst at Interarbor Solutions, your host and moderator for this ongoing discussion on IT innovation. Thanks again for listening and come back next time. Listen to the podcast. Find it on iTunes. Sponsor: HP Transcript of a BriefingsDirect podcast on how a large telco has optimized the testing and development procedure with tools from HP. Copyright Interarbor Solutions, LLC, 2005-2013. All rights reserved. You may also be interested in: • • • • • • • • • • • Cardlytics on HP Vertica Powers Millions of Swiftly Tailored Marketing Offers to Bank Card Customers Efficient big data capabilities help Cerner drive needed improvements into healthcare outcomes Learn how Visible Measures tracks an expanding universe of video and viewer use big data Using Vertica, Empirix delivers complex carrier network performance data With big data, the DNC turns politics into political science Need for quality and speed powers Sentara's applications modernization journey Big data changes the customer analysis game for Yammer, Spil Games, Jobrapido Application development efficiencies drive Agile payoffs for healthcare tech provider TriZetto How MZI HealthCare identifies big data patient productivity gems using HP Vertica Advanced IT monitoring Delivers Predictive Diagnostics Focus to United Airlines HP Vertica Architecture Gives Massive Performance Boost to Toughest BI Queries for Infinity Insurance