Today, software is a part or wholly involved in all things around us. There are various purposes behind software development. The software has become an integral part of our lives and has made our lives easy – be it educational, professional or personal.
The software is no more extensive programming that is executed by one person. It is a result of analysis, documentation, complex structure development and maintenance. software development life cycle (SDLC) can face many challenges during each phase, but the biggest challenge is from where to start. With no defined phases of SDLC can put management in a risky situation with the waste of both time and cost.
There are six stages of software development lifecycle. Let us understand each of them in detail.
Requirement gathering and analysis
It is a process of determining your client’s expectation for a new project. This is the very initial level of the software development lifecycle. Collect the project requirement. This phase includes project managers and analytics who collect the information and prepare documentation.
The meeting is held with project stakeholders to discuss the various areas of the project.
Collect following information in this phase.
a) Gather all the requirement from the client. Understand the purpose of the project/software.
b) Validate the information collected, fill the understanding gap, if there is any.
c) Formally document the requirements. Remember, these documents are tracked during the entire project lifecycle. Prepare a comprehensive report of understanding, diagrams which is helpful for the developers to understand the project in brief. DFD (Data flow diagram), Activity diagrams are essential to creating at this phase.
d) The final step in the requirement gathering phase is verification. This step verifies that the documented requirements are accurate and matches the expectations of the client.
Requirement gathering –> Validating –> documentation –> Verification
Finally, create a document mentioning the requirement specifications. This serves as the guideline for the entire project for each stakeholder.
This phase begins once the client signs off the functional requirement document. Here, the client allows the design team to start creating the actual user-interface of the project.
In this phase, we create the software design as per the documented flow and client design preferences. The design phase serves as an input for the next phase which is the implementation/development phase.
On receiving the design documentation, divide the entire project into smaller parts (modules), and the developer team starts actual coding.
In this phase, the main focus is on the project developers, and this can be the most extensive phase of the project development lifecycle.
Building the system –> Integrating modules –> Preparing the technical environment for software –> Approval for the testing phase
In this phase, test and integrate all the components of the software project. There are basically two types of testing. Manual and automated.
The software may take one or two combined methods of testing depending upon the complexities involved in the software. Different kind of software tests includes security, performance, accessibility, compatibility, stress and regression tests.
Once the testing is done, the developers need to solve the error and bugs, if any.
After resolving the error, re-test the module, if time permits, re-test the entire software.
The deployment phase actually includes two sub-phases. A) beta deployment b) Final deployment (Live).
The beta deployment phase generally launched on a company server. Issues are being caught and resolved before the final launch. This is the time where you can implement different tests related to user monitoring.
Based on the issues found, the development team make the final changes and make the product live on the client-server and shift to the actual domain.
When your client actually starts using the system, they may face some real-time issue which we need to resolve time to time. This process is known as maintenance. Maintenance doesn’t only include errors, but also includes upgrading server space, updating domain, and other minute changes to make the software perform better than before.
Why should you be following and tracking SDLC?
- Each phase of software development life cycle helps to ensure a common understanding between the client, project manager, developers and testers.
- It breaks down a complex project into manageable parts.
- Encourages a healthy agile development process.
- It helps to review the performance of each stakeholder.
- Lastly, Understanding and following SDLC can result in timely completion of the project.
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