Waterfall SDLC is one of the most primitive software development life cycle, since its inception many other models like scrum, V shape model etc have evolved, waterfall model is a good choice for linear and sequential software development.
Waterfall model is linear and sequential in nature, it doesn’t offer flexibility as compared to scum development cycle. It is less flexible than the scrum development model.
The waterfall model consist of the following stage:
-> Requirement analysis
-> Designing Phase
-> Back end Phase
-> Testing Phase
-> Deployment and Distribution Phase
-> Maintenance Phase
Waterfall does involve a lot of documentation, as each SDLC phase is associated with a detailed set of documentation.
Documentation plays a critical role as without the right set of documentation even small changes in Functional requirements can result in higher cost implications.
The waterfall model can be highly effective based on project type, if it is small size and mid size project then the sequential nature of the waterfall model can be really beneficial due to high level of documentation and deep requirement analysis. But for big software project which are dynamic in nature it is better to adapt to agile Dev model/ scrum Dev model.
Each stage of the waterfall SDLC, the deliverables types and formats will vary based on the respective stages.
Diagram
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