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Services Software Development

Testing and Maintenance

Software maintenance in software engineering is the modification of a software product after delivery to correct faults, to improve performance or other attributes, or to adapt the product to a modified environment

DEFINITION: The modification of a system to correct faults, to improve performance, or to adapt the system to a changed environment or changed requirements.

This international standard describes the 6 software maintenance processes as

The implementation processes contains software preparation and transition activities, such as the conception and creation of the maintenance plan, the preparation for handling problems identified during development, and the follow-up on product configuration management.
The problem and modification analysis process, which is executed once the application has become the responsibility of the maintenance group. The maintenance programmer must analyze each request, confirm it (by reproducing the situation) and check its validity, investigate it and propose a solution, document the request and the solution proposal, and, finally, obtain all the required authorizations to apply the modifications.
The process considering the implementation of the modification itself.
The process acceptance of the modification, by checking it with the individual who submitted the request in order to make sure the modification provided a solution.
The migration process (platform migration, for example) is exceptional, and is not part of daily maintenance tasks. If the software must be ported to another platform without any change in functionality, this process will be used and a maintenance project team is likely to be assigned to this task.
Finally, the last maintenance process, also an event which does not occur on a daily basis, is the retirement of a piece of software.

The Benefits of System Maintenance Software

Maintenance / Software maintenance

Maintenance : the act of keeping an entity in an existing state of efficiency,

validity, to preserve from failure or decline.

e.g. Car maintenance

Software maintenance : modification of a software product

after delivery in order to

improve performance,
correct faults,
adapt the product to a modified environment

In most of the cases, for atomic-scale software,

we restart from existing software to add new functionalities.

Maintenance is essential. Waterfall model is inadequate.

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