Different Methodologies in Software Development Life Cycle 

What is SDLC? 

Software Development Life Cycle (SDLC) is a process used by the software industry to design, develop and test high quality software. The SDLC aims to produce high-quality software that meets or exceeds customer expectations, reaches completion within times and cost estimates. 

Agile Software Development Methodology 

The agile technique is a way for creating, distributing, and testing high-quality software as quickly and cheaply as possible. Iterative development, which enables teams to deliver more quickly and better adapt to change, is at the core of the process. 

Advantages 

• Flexible and change-adaptive software development methodologies are introduced. 
• It aids the development team in improving overall development speed and setting short-term targets. 
• improved interaction between consumers and product owners. 

Dis-Advantages 

• High levels of flexibility and too many adjustments may prove to be a distraction for the development team. 
• Constant modifications place a heavy burden on the developers. 
• Only seasoned developers can utilize agile to its maximum capacity because it is not structured like other approaches. 

 Waterfall Software Development Methodology 

Waterfall is one of the most often used software development methodologies out of all those listed here. This approach is without a doubt one of the oldest because it was first used in 1970. 

The waterfall model divides project operations into sequential stages that are linearly passed down from one another, each of which is characterized by a specialization of duties and is dependent on the outputs of the previous phase. The method is common in some branches of engineering design. As progress moves mostly in one direction (“downwards” like a waterfall) through the phases of conception, initiation, analysis, design, construction, testing, deployment, and maintenance, it tends to be among the less flexible and iterative approaches in software development. 

Advantages 

• The method is simple to manage and put into practice because it is linear and preset. 
• Every step has a unique evaluation method and allotted amount of development time. Development is made more time efficient as a result. 

Disadvantages 

•  It’s difficult to foresee the final product’s appearance. 
• The process is difficult because there isn’t enough paperwork. 

V-Model 

The V-shaped model illustrates the connections between each stage of development and its corresponding testing stage. The phrase “verification and validation model” is another name for it. This is so because there is a validation phase that goes along with every verification phase. 

Benefits of the V-model  

• Simple and convenient to use 
• proactive defect tracking, or the early detection of flaws. 
• Avoids the downward flow of the defects. 

• Prior to coding, testing activities including planning and developing tests take place. This saves a lot of time. higher likelihood of success than the waterfall model, therefore. 

The Iterative approach 

One of the software development life cycle models that is easy to implement is the iterative approach. In some cases, the original or fundamental software requirements are well recognized, but the project’s actual scope or complete set of features is not. 

 Additionally, the software development company might opt not to provide the entire functionality of the program at once. Instead, they favor providing it through recurrent updates. Or the client demands some functionality upgrades while the project is still being developed. 

Advantages 

• The method is simple to manage and put into practice because it is linear and preset. 
• Every step has a unique evaluation method and allotted amount of development time. Development is made more time efficient as a result. 

Disadvantages 

• Risk analysis is required for highly qualified personnel. 
• Budget has increased because requirements have changed. 

• There is a risk because it is unclear when the project will be completed. 

Incremental Model: What Is It? 

Software development using the incremental model divides requirements into numerous independent software development cycle modules. Analysis, design, implementation, testing/verification, and maintenance are the stages of incremental development. 

Advantages 

• During the software life cycle, the software will be produced swiftly. 

• Requirements and scope changes are flexible. 

Dis-Advantages 

• More expense compared to the waterfall model. 
• Before breaking down and developing, a clear and comprehensive image of the entire process is required. 

Conclusion 

It’s crucial to use the appropriate SDLC technique while creating any form of software. If you choose poorly the process may falter or possibly become an unrecoverable endeavor. So, choose them carefully!