Project management methodologies are the step-by-step directives that assist in developing effective software projects. With so many diverse and overlapping approaches to handle the complexities of a project, the most difficult part is to decide which methodology will be effective for you.
Some of the key project management methodologies are Waterfall, Agile, Six Sigma, Scrum, Critical Path Method (CPM) and Critical Chain Project Management (CCPM). Waterfall and Agile are two diverse and popular methodologies for application development.
Waterfall is used as a linear sequential model in software development. It’s development process flows with static phases like conception, requirement analysis, design, implementation, system testing, deployment and maintenance. Waterfall model offers complete control on each and every phase of the project. However, it tends to be extremely stubborn when the changes in the project are anticipated. As in the waterfall model, every phase needs to be completed before the subsequent phase can commence. Also there is no scope of overlapping in the defined phases.
Requirement gathering and analysis is the foremost phase in this model. In this phase all the probable software requirements are gathered followed by design phase which helps in specifying system and hardware requirements. It assists in defining the complete system architecture.
Subsequent to design, the system is developed in small programs known as units. These units are integrated, developed and functionally tested which is referred to as Unit Testing. Post integration, the complete system is tested for any faults and failures.
User acceptance testing (UAT), also called Beta or End-User Testing is the final phase of the testing process. Throughout UAT, users test the software making sure it can manage the required job as per the specifications. Once the testing is done and there are no bugs or flaws, the project is then deployed to client environment.
If there are issues reported in the client environment, they are further solved in the maintenance phase. For fixing these problems patches are generated. For system performance improvements advanced versions are also released.
All the phases are cascaded to each other and perceived as flowing progressively downwards like a waterfall.
Agile follows an iterative approach to application lifecycle management. As a substitute of handling all the planning upfront, it concentrates on being lean and creating minimum viable products (MVPs) by setting-up time periods. It brings improvements with every iteration.
The multiple phases of project development cycle can be executed in parallel, and a backlog is reserved for tracking chosen features and requirements. Agile methodologies give priority to teamwork, continuous user feedbacks, constant improvements and flexibility to adapt with varying requirements.
You must probably be familiar with the never ending discussion this subject can bring up. As we discussed, on one side you have the conventional Waterfall methodology where development is managed as a linear series of phases starting from conception to final creation on the other side you have a supple, iterative and advanced development approach. So what makes these two approaches diverse? And what are the pros and cons??
The collaborative hybrid model combines both the models. Combination of Waterfall and Agile methodology safeguards the success of the project. It eliminates the weaknesses of both the models; and implements their advantages.
Both waterfall and Agile methodologies have their own merits and demerits. The important thing is to decide which one is suitable for your project. If your requirements seem to alter quickly, select Agile. If you know exactly what you require, waterfall should be a better option then. Or by going for a Hybrid model, you can combine the advantages of both methodologies for your project.
Do you favor the Agile or waterfall methodology? Why? Have you ever combined the two? What was the outcome? Let us know in the comments section.
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