QUESTION $3$

$(20$ Marks$)$

The software development process does not stop when a system has been deployed and delivered; it continues throughout the lifetime of the system.

$3\mathrm{.}1$ Business changes and changes to user expectations generate new requirements on a regular basis. Elaborate on the reasons for modifications to parts of any software.

$(5$ Marks$)$

$3\mathrm{.}2$ Software engineering should be thought of as a spiral process. Distinguish between evolution and servicing.

$(10$ Marks$)$

$3\mathrm{.}3$ Discuss the importance of software evolution to managers of the any development company.

$(5$ Marks$)$