Agile Model vs. Waterfall Model

What is agile model?

Agile model combines both iterative and incremental process models. This model focuses on process adaptability and satisfying the customers by swift delivery of software product. The agile model divides the product into small incremental builds. These builds are then iterated. The time taken for each iteration is approximately one to three weeks.   

Cross-functional teams involve themselves in each iteration and see to that it is properly undertaken. Once the iteration is successfully completed, then the final product is shared to the customer for their feedback.

Advantages of agile model:

·         Teamwork and cross-training is encouraged

·         It is adaptable to both fixed and changing requirements in line with product development

·         It is suitable for product development of such products and environments where changes take place frequently

·         Simple to follow rules and an easy to understand documentation process

·         It can be easily managed without any complexity as such.

What is waterfall model?

Waterfall model follows a more sequential approach. This means that each phase of the waterfall model must be successfully completed before going on to the next phase. The waterfall model demonstrates the software development life cycle process in a linear sequential flow.

Following are the different phases of the waterfall model:

·         Requirement Analysis

·         System design

·         Implementation

·         Testing

·         Deployment

·         Maintenance

Advantages of waterfall model:

·         For every phase, there are particular deliverables to be expected and also a thorough review activity takes place

·         It is highly rewarding for small projects where requirements are clearly presented

·         All the tasks can be easily arranged

·         All the results obtained from each phase are well documented 

·         All the stages of this model are well-defined for providing productive outcomes.