Agile

Agile is a highly evolved and advanced version of Iterative SDLC model. Key features of this approach are:

• Agile methodology is charaterized by the development of software in multiple iterations, with each iteration being typically between 2 to 4 weeks.
• Each iteration has all the phases of Software Development Life Cycle; including requirements definition, design and estimation, implementation, testing and delivery.
• As part of Agile methodology, a regular, milestone-based delivery schedule is followed. As components get developed, they get delivered in a working state; easy to be integrated with the rest of the system as it gets developed. This is in contrast to the delayed delivery model in which working software gets delivered only when the entire system is ready.
• To ensure that the system is getting built in the right direction, there are regular reviews of the developed components against the requirements. This is followed up with a sign-off from the client. In case any course correction is needed, be it in terms of requirements, scope or the developed software, it can get easily incorporated.