Service Virtualization 101

Service Virtualization 101: What is a Virtual Service and What Is Not

Chris Kraus

DCX12E

CA TechnologiesSenior Principal Product Manager

ca DevCenter

3 © 2014 CA. ALL RIGHTS RESERVED.

Agenda

TYPES OF VIRTUALIZATION

HOW IS SERVICE VIRTUALIZATION DIFFERENT?

DEMONSTRATION

1

2

3

Types of Virtualization


Introduction: What is Virtualization?

Leading technology analysts broadly define virtualization as “the practice of simulating the behavior of a physical asset.”

For example, a server or application in a software emulator then hosting that emulator in a virtual environment

The virtual environment must behave enough like the physical environment to ensure interactions with the emulated service look like the real one.

Benefits of virtualization include:

Control: Better ability to manage physical assets, simplifying change and configuration management

Capacity: Improved utilization of physical assets

Agility: Reduced wait time (and associated costs) related to IT groups making changes to environment configurations and hardware resource allocations


Virtualization Types

Virtualization is the creation of a virtual (rather than actual) version of an asset, such as:

Operating systems

Servers

Storage Devices

Network Resources

Data Services

Virtualization examples:

VM Ware

Citrix

VPN

and others . . .


SDLC ChallengesWithout Virtualization in Use

INTEGRATION LAYER

Application 1 Application 2

Service 2Service 1

MFSaaS or Hosted

Solution

Net effect of these issues:

Server proliferation

Lost productivity in development

Greater cost of third-party systems

Increased risk of production issues

Cloud/SaaS issues:1. Costly access2. Volatile data

App team issues:1. Every App team needs their

own infrastructure.2. Every discipline (Dev, Test, Int)

wants their own environment.

Server issues:1. Access restricted2. Capacity constraints3. Data volatility4. Security concerns

Service provider issues:1. Commingled services2. Difficulties with parallel

development of apps and services


Hardware Virtualization

Hardware virtualization is the simulation of hardware behavior.

The key driver of hardware virtualization is to improve utilization of physical capacity.

Can be used to:

Virtualize test beds.

Maintain the countless configuration of operating systems and platforms that software needs to run against.

Some limitations include:

Many of the enterprises most complex (mainframes) and costly systems (externally hosted partner services, SaaS, cloud-based systems and systems under a high degree of change) can not be imaged into a virtual machine.

It does not adequately address non-hardware costs, such as licensing, data volatility, patch release managementand other significant IT admin costs (maintaining server images, software configurations, installs, etc.).

It cannot contain cost and stabilize the data of third-party hosted applications, SaaS and cloud-based systems.


Hardware virtualization is helpful... but still NOT enough.

Application Application

MFSaaS or Hosted

Solution

Net effect:

Middle-tier server proliferation prevented

Largest, most complex, most costly systems not affected

Cloud/SaaS issues UNCHANGED:1. Costly access2. Data volatility

App team issues HELPED:1. First level of connectivity solved

App team issues UNCHANGED:1. Back end systems/services

Server issues UNCHANGED:1. Restricted access2. Capacity constraints3. Data volatility4. Security concerns

Service provider issues HELPED:1. Commingled services SOLVED2. Difficulties with parallel

development of Apps and Services

Vir

tual

Ser

ver

How Is Service Virtualization Different?


Added Value Through Service Virtualization

[virtualized within VSE]

App team BENEFITS:1. All teams get their own extended

environment at very low incremental cost.

2. There are no conflicts with other application teams

Server BENEFITS:1. Available 24/72. Unlimited capacity3. Data consistency4. Sensitized for security

Service provider BENEFITS:1. Services all in isolated

environment2. Virtual services enable parallel

development.

Virtual Service Environment

Virtual Servers

Service2vsMFvs

Hardware Virtualized VM instance

Integration Layer

Service2vs


CA Service Virtualization

Service virtualization involves the modeling of a virtual service process and the imaging of software service behavior to “stand in” for the actual service during development and testing.

Is complementary to hardware virtualization and provides a solution to address hardware virtualization limitations

CA has developed the ability to virtualize the behavior of applications and infrastructure components at either the entire endpoint or at an interface level. This enables organizations to:

Provide 24/7 access to service end points

Remove capacity constraints

Remove contention for shared resources

Provide an alternative to unavailable systems and those still under development

Control complex data scenarios that are inherent during the SDLC

Reduce or eliminate the cost of invoking third-party systems for non-production use


The function of a “virtual service” can be summarized in three steps:

The behavior of the “process” step can be a variety of actions:

Perform some business logic:

‒ Deactivate expired accounts

‒ Send emails to customers

‒ Print weekly reports

Retrieve the correct ZIP code for a supplied address

Retrieve rows from a database to include in the response

Add/update/delete rows from a database

What does a “Virtual Service” do?

RESPONDPROCESSLISTEN


Assumptions About Virtual Services

The virtual service (VS) created by CA Service Virtualization will stand in for the real service

We are not duplicating all of the real service’s complex logic

Assumptions include:

VS can predict future behavior from current behavior: Behavior is fully encompassed in request/response loops (VSE txns)

Variation in responses are based on either the input value variation and/or the context of the conversation

VS can lie and consumers won’t know or care, however: The structure of the response must be what they expect

Consumers will verify that values they provide as input match output, otherwise they will get upset

Dates being outside of their expectations really make the consumer upset


The Big Problem: Constraints Across the SDLC

“I can’t do anything until I have everything…and I never have everything!”

ESB

!

!

! ! !

System Unavailable

x x x

x

Invalid data Access Fees

Incomplete Development


The Big Problem: Constraints

“I have everything I need, when I need it!"

ESB

! ! !

System Unavailable Invalid data Access Fees

Incomplete Development


CA Enables True Agile Development

PRESENTATION

APPLICATION SERVICES

INTEGRATION LAYER

BACKEND

ESB

CA Application Test


Living, breathing “live” model

Sophisticated, contextual behavior

Automatic handling for dynamic properties

Service Virtualization: How does it work?TRUE AGILE

DEVELOPMENT

CAPTURE PROCESS MODEL

Record traffic between existing systems.

Create from engineering specifications.

Draw from sources such as log files, sample data, packet capture and CA Continuous Application Insight.


DevTest Benefits

Provide round-the-clock access to service end points.

Remove capacity constraints.

Remove contention for shared resources.

Provide an alternative to unavailable systems and those that are still under development.

Control complex data scenarios that are inherent during the SDLC.

Reduce or eliminate the cost of invoking third-party systems for non-production use.

Increase agility and improve quality in complex and changing IT environments.

Demonstration


Devcenter

CA Application Test

DevOps

Agile Parallel Development

Related Technologies

Devcenter

CA Service Virtualization

Devcenter

DevTest Overview

1:15 Monday


Q & A


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For Informational Purposes Only

© 2014 CA. All rights reserved. All trademarks referenced herein belong to their respective companies.

This presentation provided at CA World 2014 is intended for information purposes only and does not form any type of warranty.Some of the specific slides with customer references relate to customer's specific use and experience of CA products and solutions so actual results may vary.

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Service Virtualization 101