SDLC Vs STLC: What’s the absolute Difference?

So, in this article, I will be comparing Software Development Life Cycle and Software Testing Life Cycle (SDLC vs STLC). Let’s take a look at what we will be discussing in this article

What SDLC?

SDLC (Software Development Life Cycle) defines all the standard stages involved in software development. The SDLC life cycle is a step-by-step software development process in the following order. It aims to create a high-quality system that meets or exceeds customer expectations, operates efficiently and effectively on existing and planned information technology infrastructure, and is inexpensive to maintain and inexpensive to upgrade.

1. Requirements Gathering
2. Design the software
3. Build the Software
4. Test
5. Deployment
6. Maintenance.

Each stage has a definite entry and exit criteria with deliveries.

What is STLC?

Software Testing Life Cycle (STLC) is a well-planned testing process. In the process of STLC, various measures are taken to improve the quality of the product. However, the STLC phases only deal with testing and error detection, but not development.

Different companies in STLC define different phases. However, the typical software testing life cycle consists of the following stages.

1. Requirement Analysis
2. Test Planning
3. Test Development
4. Test Environment Setup
5. Test Execution & Closure

Difference between SDLC vs STLC

• SDLC defines all the standard stages involved in the software development process, whereas the STLC process defines various functions to improve product quality.
• SDLC is a developmental life cycle, whereas STLC is an experimental life cycle.
• At SDLC, the development team develops high- and low-level design projects.
• In SDLC, the actual code is generated and the work is done according to the design documents, while the STLC test team prepares the test environment and executes the test events.
• The SDLC life cycle enables the team to complete the successful development of the software, while the STLC stages involve only software testing.
• Software Development Life Cycle (SDLC) aims to create a high-quality system that meets or exceeds customer expectations, operates efficiently and effectively on existing and planned information technology infrastructure, and is inexpensive to maintain and inexpensive to upgrade. Whereas, The Software Testing Life Cycle (STLC) identifies which test steps to perform and when to perform those test steps. Although testing varies between companies, there is a trial life cycle.
• Phases needed are Requirement Gathering, Analysis, Design, Coding, Testing, Deployment & maintenance in SDLC vs STLC Requirement Analysis, Test Planning, Test Design, Environment Setup, Test Execution, and Test Closure.
• The actual test is done at this point. This includes unit, integration, setup, retest & regression testing, etc.
  The development team is involved in correcting the reported errors in SDLC vs STLC the actual test is done at this point. Defect reporting and review are done here.
• The software testing lifecycle is part of the software development lifecycle. SDLC plays a key role in the complete software development and is only in the STLC testing phase. STLC is therefore a subdivision of SDLC.
• The development team involves support and updates in SDLC vs STLC The QA team activates regression packages to verify the maintenance code used

Features of SDLC

• Sample structure and functions are well documented and test results are available immediately
• The project can be completed gradually before starting another project. The project units are unique and easily identifiable.
• The risk management model is integrated and handled efficiently.
• The pieces can be designed to be the source of the project

Features of STLC

• STLC analyzes system requirements collected from customers and shareholders
• It helps to create a traceability matrix
• Identify test technique and test types
• Prioritize the feature that should be the primary target in the test
• You can analyze the possibility of automation with STLC
• Identify information about the test environment in which the actual test is to be performed

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