SDLC Vs STLC: What's the Difference?

What Is STLC?

STLC stands for software testing life cycle, and it consists of several phases that must be completed in order to test software applications. STLC consists of several phases that are used to test software programs and guarantee that they meet user requirements.

STLC Phases Are as Below:

1. Requirement Analysis
2. Test Planning
3. Test Case Development
4. Test Case Execution
5. Test Closure

1) Requirement Analysis: One of the most significant phases of the STLC is requirement analysis, in which the task owner will connect with multiple stakeholders (clients, business analysts, technical leads, and system architects, among others) to determine the requirements. The testing team analyses the requirements from a testing standpoint to find the testable requirements during the Requirement analysis phase.

Deliverables from this phase are Requirement Traceability Matrix (RTM) and Software requirement Specification Document known as SRS.

2) Test Planning: The second phase of the STLC is test planning. All of the test planning took place and the actions and resources that assisted us in testing software applications that met the client's requirements.

Deliverables from this phase are the Test plan.

3) Test Case Development: Test cases are created during this phase of the STL. A test case is a set of conditions that are executed to ensure that our system or software program satisfies the client's requirements and is functioning properly.

Deliverables from this phase are Test cases.

4) Test Case Execution: In this phase, we build up a test environment in which we can run our test case to see how the real and expected results differ. This is a critical element of the STLC since it determines the software and hardware that will be used to conduct our test cases.

5) Test Closure: In this step of the STLC, all deliverables (such as the matrix, report, and results) are documented.

What Is SDLC?

SDLC stands for Software Development Life Cycle, and it consists of several phases needed to develop software applications. This process is followed to ensure that whatever we develop meets the needs of the users.

SDLC Phases Are:

1. Requirement analysis
2. Design
3. Development/coding
4. Testing
5. Deployment
6. Maintenance

1) Requirement Analysis: The first step of the SDLC is requirement analysis, in which a senior member or team manager speaks with the stockholder and makes a recommendation; this phase provides a clear image of what to build or test.

2) Design: In the second phase of the software development life cycle, all prior phase documentation (such as SRS and RTM) are used to describe system architecture.

Two sorts of design documents are created during this phase:

   1. High-level Design: Overview of each module 

• Dependencies between module
• Database structure
• Full architectural design with technological details

  2. Low-level Design: Every module's input and output – 

• Functional logic of each module

3) Development: After the high-level and low-level design phases are completed, the developer begins development and coding. To build a software program in this phase, the developer must adhere to particular design rules.

4) Testing: This is a crucial phase of the SDLC in which members of the testing team (such as the test manager, team lead, tester, and so on) are involved in the creation and execution of test cases to detect defects in the application.

5) Deployment: The SDLC deployment phase is critical since it is here that we put the software application or product into production and test it to ensure that it passes each phase of testing.

6) Maintenance: After the product has been fully operational, the application enters the maintenance phase. Software maintenance includes software upgrades and patches.

Difference Between STLC Vs. SDLC

Do you know the difference between the STLC and the SDLC? Find the distinction below: