Agile Model in SDLC

What is Agile Model in SDLC?

Agile is a software development methodology that emphasises flexibility and rapid development. It is based on the principles outlined in the Agile Manifesto, a set of guidelines for software development that values individuals and interactions, working solutions, and customer collaboration over processes and tools.

One of the key characteristics of Agile is the emphasis on collaboration and frequent communication between team members, as well as with the customer or end user. This helps to ensure that the final product meets the needs of the user and is delivered in a timely manner.

Processes in Agile Model of SDLC

Agile Model in SDLC

There are several key processes that are followed in the Agile model:


This process involves defining the project scope, goals, and deliverables, as well as creating a roadmap for achieving them. It is an iterative process that occurs throughout the project.

Requirements gathering and analysis:

This process involves working with stakeholders to identify and prioritise the requirements for the project. In Agile, requirements may change as the project progresses, so it is important to have a flexible process for gathering and analysing them.

Design and development:

In this process, the team designs and develops the software based on the requirements gathered during the analysis phase. Agile teams work in short sprints, delivering small increments of functionality at a time.


Testing is an integral part of the Agile process and is performed throughout the project. It helps ensure that the software meets the requirements and is of high quality.


In Agile, deployment is often done in stages, with new functionality being released as it is developed and tested. This allows for a more flexible and incremental approach to software delivery.


In the Agile model, maintenance is ongoing and occurs throughout the project. It involves fixing bugs, updating the software to meet changing requirements, and maintaining the quality of the software.

Advantages of Agile Model in SDLC

Advantages of Agile Model in SDLC

Dis-advantages of Agile Model in SDLC

There are several potential disadvantages to using the Agile model for software development:

Lack of upfront planning:

One of the main principles of Agile is to embrace change and adapt to it throughout the development process. This can be beneficial in some cases, but it can also lead to a lack of upfront planning and a lack of clear direction for the project.

Dependence on a self-organizing team:

The Agile model relies on the team being self-organizing and able to adapt to changing requirements. If the team is not fully capable of self-organization or lacks the necessary skills, the project may suffer.

Limited documentation:

Agile emphasizes working software over comprehensive documentation, which can be a disadvantage if thorough documentation is necessary for the project.

Communication challenges:

In an Agile project, there is a lot of collaboration and communication between team members, stakeholders, and customers. This can be challenging if team members are not co-located or if there are language or cultural barriers.

Resistance to change:

Some organisations may resist adopting the Agile model because it requires a significant change in the way they work. This can be especially challenging for large organisations with established processes and hierarchies.

Limited ability to handle large projects:

Agile is best suited for small to medium-sized projects, and may not be as effective for very large projects with a high level of complexity.

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