Software Development Life Cycle (SDLC)

Software development life cycle is a structural representation in which a particular software product development is based.

SDLC involved various models in which method of forming a product is same but the technicalities are different.

Software development process mainly consists of various steps and this life cycle depicts what tasks are performed in which step.

Every software development organization follows models inspired by SDLC process and on the basis of this procedure only they maintain, implement and secure the product.

Stages in Software Development Life Cycle (SDLC)

There are five main steps in SDLC process:

  1. Planning
  2. Design
  3. Implementation
  4. Testing
  5. Documentation
  6. Deployment and Maintenance


For the development of any product, in this case software, foremost step is to have a proper planning.

Every organization has a specific department which is responsible for collecting all the requirements and analyses what is needed.

Requirements of the software are based on what kind of software is desired by the client and further research is being made on the basis of that information.

Once the requirement gathering step is completed, a document or report is generated in which the mission and vision of the software is mentioned. Feasibility study of the project is also done in this step of process.


Requirement gathering step is followed by designing of the product. In this step, analysis is prepared and features regarding design of the product are made in which screen layouts, diagrams, graphical representation and pseudo code is prepared. Domain modelling is also done in this step only.


According to the design of the product, next step of the SDLC method is to execute points and start writing code for the software. Senior level coders work in team to produce optimal code.


Once the code is prepared, it is tested by specific department to check whether it is running properly or not. Bugs and errors are checked in this step. Testing is very crucial and essential part of any software development procedure as company is required to produce product as desired by the client.


Keeping records of every step is important so that when required again this procedure can be used. By the time, every software gets updated and improved thus for future reference documentation is essential. API (Application Programming Interface) is a part of documentation that mainly includes having records of designs for the software product.

Deployment and Maintenance

After the approval of the software to release its final output, next step involves deployment.

The process of deployment consists of installation of the software, customization of various parameters, testing and setting the period of evaluation for extended time what so ever.

Software can be faulty any day, thus it is required to have proper and regular maintenance plan for it. The utmost requirement of the client is that the software hence produced is compatible with every system and for that many things are upgraded in it.

Maintenance involves adding, upgrading and analyzing the software at regular intervals so that it can be used at larger scale.