The Agile Software Development Life Cycle (SDLC) Model: Does It Still Work in 2022?

Complete Guide to The Agile Software Development Life Cycle

Agile SDLC is something you hear from time to time in software development companies. It is a popular method that uses six stages. Find out how this software method can help your company gain loyal customers.

What Do You Mean by Agile SDLC?

The Agile software development method focuses on performing incremental changes. It also stresses the need for making group-based decisions. It emphasizes the need for each team member to work together. This is why Agile in SDLC is often described as a “mindset” rather than a process. 

Another important characteristic of the Agile approach is that it is output-driven. The goal is to deliver a simple, yet working prototype. Changes can be added later on. Every change or modification performed is tested immediately. This is because the team needs to ensure they meet the client’s requirements. The process of doing small changes and testing quickly is known as iterations. Once the iteration is complete, the product is presented to the customer. 

Here’s what to expect in iterations:

  • Requirements analysis
  • Architectural design
  • Acceptance testing
  • Coding
  • Delivery feedback
  • Unit testing

The Advantages and Disadvantages of Agile SDLC

Every process has its pros and cons. Agile is no different. Here are some expectations when using the Agile SDLC model.


  • It is easy to follow the project timeline. 
  • The process is flexible and can easily accommodate changes.
  • Client feedback reduces mistakes. 
  • The project can be delivered early. 
  • Functional requirements are addressed immediately. 
  • Agile teams encourage clients to be involved in the development process. 


  • Changes or additional features may not be compatible with the working prototype. 
  • The project timeline can be extended due to the iterations. 
  • Cost overruns are possible. 

Six Phases of the Agile SDLC Model

This software development model features six phases. Read on to see what each stage has in store.

  • Concept

The concept stage is the first phase in the Agile SDLC model. Development teams meet the clients during this stage. Here, involved parties discuss the project’s duration, requirements, and scope. 

  • Inception

This phase requires heavy involvement from the clients. During inception, stakeholders must elaborate on the specifics of the project. Here, they share their expectations about the software’s features and functionalities. Both the stakeholders and the development team must agree on the project plan. Once everything is finalized, the developers will start with the design process. Regular check-ins with the clients are performed. This will ensure that everyone is aligned with the project’s goals.

  • Iteration

Iterations are also called the building phase. This is where the development team starts to “build” a simple, but working prototype. Then the team will gather feedback from the client. The feedback will be used to incorporate the necessary changes or improvements. Clearly, this is the most time-consuming phase of Agile development. Teams can only jump into the release stage once the changes requested by the client are done. 

  • Release

The product is almost ready at this stage. It must pass quality assurance first to ensure that there are no errors. Once the product gets the green light, it can undergo production.

Here, the software can be already deployed. However, quality assurance is performed first before it becomes available to the public. Final changes will be implemented at this stage. 

  • Maintenance

Clients are now able to access the software once the prototype is completed. The development teams assume the role of support and trainers to the client. During this stage, it’s not surprising that new iterations occur.

  • Retirement

The retirement stage takes place when the software is no longer supported. This happens when the software no longer meets the business’ needs. Or it could be that the organization has already found a new tool. When a software enters “retirement,” support and maintenance are no longer provided.

Why Agile Is the Best Software Development Model

The Agile SDLC model is best for a few reasons:

  • The model allows for flexibility and speed in development.
  • There is more communication between teams.
  • It is still the fastest way to release an 80% completed product.

You can consider implementing Agile SDLC if your project is stalled. 

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