SIL works on internationally accepted delivery models. These Software Development Life Cycle -SDLC- Models have been followed successfully by SIL for the last few years. We have, however, experienced that the Delivery Model needs little changes as per the size and complexity of the project.

The tree diagram below shows the classification of the SDLC models.

Overview of Base Model

The Waterfall model can be considered as the base model of SDLC. All other models can be derived from this model. The following diargram shows the various phases of this model. This model can be tailored as per project size, complexity and requirements.