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Application Management LifecycleThe lifecycle followed to develop and manage applications has been referred to by many names, including the Software Lifecycle (SLC) and Software Development Lifecycle (SDLC). These are generally used by Applications Development teams and their Project Managers to define their involvement in designing, building, testing, deploying and supporting applications. Examples of these approaches are Structured Systems Analysis and Design Methodology (SSADM), Dynamic Systems Development Method (DSDM), Rapid Application Development (RAD), etc. ITIL is primarily interested in the overall management of applications as part of IT services, whether they are developed in-house or purchased from a third party. For this reason, the term Application Management Lifecycle has been used, as it implies a more holistic view. This should not replace the SDLC, which is still a valid approach used by developers, especially by third-party software companies. However, it does mean that there should be greater alignment between the development view of applications and the ‘live’ management of those applications. This is more difficult in large-scale purchased applications, such as e-mail, since the developers do not typically interact individually with their application’s users. However, the basic lifecycle still holds true in that the application needs requirements, design, customization, operation and deployment. Optimization is achieved through better management, improvements to customization and upgrades. The Application Management Lifecycle is illustrated as follows: Figure 6.5 Application Management Lifecycle ITSM processes and Applications Development processes have to be aligned as part of the overall strategy of delivering IT services in support of the business. Applications Development and Operations are part of the same overall lifecycle and both should be involved at all stages, although their level of involvement will vary depending on the stage of the lifecycle. Relationshipbetween the Application Management andService Management Lifecycles The Application Management Lifecycle should not be seen as an alternative to the Service Management Lifecycle. Applications are part of services and have to be managed as such. Nevertheless, applications are a unique blend of technology and functionality and this requires a specialized focus at each stage of the Service Management Lifecycle. Each stage of the Application Management Lifecycle has its own specific set of objectives, activities, deliverables and dedicated teams. Each stage also has a clear responsibility to ensure that their outputs match up to the specific objectives of the Service Management Lifecycle. Different aspects of Application Management are covered in detail in each of the ITIL publications, as follows:
Date: 2014-12-29; view: 1467
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