Explain in detail about software Maintenance.

• Software maintenance is an action in which program is modified after it has been put into use.
• Maintenance is termed as the procedure in which changes are append by either modifying the existing system' s architecture or by adding new elements to the system.

Different views of maintenance

• The bug-fixing view
• The need-to-adapt view
• The user-support view

Need for software maintenance

• To provide continuity of service
• To back up mandatory upgrades.
• To provide user requests for improvements.
• To facilitate future maintenance work.