SDLC Model: Typical Spiral Model

Developed by Barry Boehm in 1988. it provides the potential for rapid development of incremental versions of the software. In the spiral model, software is developed in a series of incremental releases. During early iterations , the incremental release might be a paper model or prototype.

Each iteration consists of
Planning, Risk Analysis, Engineering, Construction & Release & Customer Evaluation.


Customer Communication: Tasks required to establish effective communication between developer and customer.

Planning: Tasks required to define resources, timelines, and other project related information.

Risk Analysis: Tasks required to assess both technical and management risks.

Engineering: Tasks required to build one or more representatives of the application.

Construction & Release: Tasks required to construct, test, install and provide user support (e.g., documentation and training)

Customer evaluation: Tasks required to obtain customer feedback based on evaluation of the software representations created during the engineering stage and implemented during the installation state.