Software Development Life Cycle

Software Development Life Cycle (SDLC) is a series of steps or phases that provide a model for the development and life-cycle management of software applications. There are six primary phases in every SDLC model:

• Requirements Gathering and Analysis

• Design

• Implementation

• Testing

• Deployment

• Maintenance

Following are the most important and popular SDLC models:

• Waterfall Model

• Iterative Model

• Spiral Model

The other related methodologies are Agile Model, Rapid Application Development (RAD) and Prototyping Models.