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Chapter 9 – Software Evolution - Pace

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.

managing change to their existing software systems. Chapter 9 Software evolution 3 . ... they must be changed and updated. •The majority of the software budget in large companies is devoted to changing and evolving existing software rather than developing new software. ... usually exceed the software development costs.

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