What does SDLC do exactly in accordance to Developing and Purchasing Information Systems?
-It helps the hinderince of creating a system
-It helps to reduce failures like unclear goals, overrunning costs etc
-Lessens the chance of a system not achieving the users objectives
Customers may not be sure on what they want. It is important to ask the relevant questions, mistakes and omissions can be responded to negatively and be costly also! SDLC should be followed to enable that the right steps are taken. Communication is vital also.
Below is a graph of the main basic functions of SDLC, which relates to Developing and Purchasing Information Systems: