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Chapter 9 – Software Evolution

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Chapter 9 Software Evolution Summary 1 Chapter 9 Software Evolution Topics covered Evolution processes Change processes for Software systems Program Evolution dynamics Understanding Software Evolution Software maintenance Making changes to operational Software systems Legacy system management Making decisions about Software change 2 Chapter 9 Software Evolution Software change Software change is inevitable New requirements emerge when the Software is used; The business environment changes; Errors must be repaired; New computers and equipment is added to the system; The performance or reliability of the system may have to be improved. A key problem for all organizations is implementing and managing change to their existing Software systems. 3 Chapter 9 Software Evolution Importance of Evolution Organisations have huge investments in their Software systems - they are critical business assets.

–The evolution team may expect detailed documentation to support evolution and this is not produced in agile processes. •Where a plan-based approach has been used for development but the evolution team prefer to use agile methods. –The evolution team may have to start from scratch developing automated tests and the code in the system

  Evolution

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