Difference Between SDLC and STLC

What are the Differences Between SDLC and STLC?

As we have seen a fleeting introduction to SDLC and STLC. Now we will study the difference between SDLC and STLC. The notable differences between these two software development cycles are described in the table provided below:

Key Differences Between SDLC and STLC

Difference Between SDLC vs STLC
SDLC	STLC
SDLC is generally related to software development.	STLC is generally related to software testing.
Including the development, it focuses on other phases like testing are also included.	STLC focuses only on testing the software.
SDLC consist of a total of six steps or phases.	STLC consist of only five phases or steps.
In this more members (developers) are required for completing the whole process.	In this, less number of members (testers) are needed for completing the whole process.
The development team makes the whole plans and designs.	The testing team makes the whole plans and designs.
The objective of SDLC is to complete the successful development of software.	The objective of STLC is to complete the successful testing of software.
SDLC helps in developing good quality software.	STLC helps in making the software defects/error-free.
These phases are completed before the STLC phases.	These phases are performed after the SDLC phases.

What is the SDLC?

The term SDLC stands for Software Development Life Cycle it describes the process of several activities followed by the software industry to bear working software. It brings about planning, requirement gathering, analysis, designing, implementation, testing, and maintenance. SDLC covers the entire life cycle of software, such as its formation to its retirement. The SDLC life cycle consists of a few phases, each one has its processes and deliverables. The result of the given process should be a software system that fulfils the customer expectations like the work process should be completed within the estimated time and budget, etc.

A flowchart of SDLC that has a sequence of different activities performed during the software development process is given below:

Requirement Analysis ➡ Software Design s ➡ Software Build ➡ Testing ➡ Deployment ➡ Maintenance.

What is the STLC?

The term STLC stands for Software Testing Life Cycle. It consists of a series of few activities to assure the quality of the software application as a segment of the testing process. This cycle is performed by the testing team to assure the software is of high quality and also ensure that each new function should roll out smoothly and successfully. STLC is an integral part of the SDLC but only applicable to the testing phases. The phases of STLC may be replicated multiple times during product development. The test closure is a document that is provided for the analysis of all tests conducted during the software development life cycle.

A flowchart of STLC that has a is a sequence of different activities processed during the software testing process is given below:

Test Planning ➡ Test Case Development ➡ Test Environment Setup ➡ Test Execution ➡ Test Closure.

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FAQs

What is the basic difference between SDLC and STLC?

The basic difference between SDLC and STLC is that the SDLC is a sequence of different activities that are executed during the software development process whereas the STLC is a sequence of different activities that are executed during the software testing process.

Is STLC part of SDLC?

Yes, the STLC is part of SDLC. We can say that STLC is a subdivision of the SDLC. The STLC performs the testing phase where the quality of software or product is assured whereas the SDLC has a vast and vital role in completing the development of a software or product.

What are the 7 phases of SDLC?

The Seven Stages of the SDLC are the Planning phase, the Analysis and defining requirements phase, the Design phases, the Implementation & coding phases, the Testing phase, the Deployment phase, and the Maintenance phase of SDLC models.

What is the STLC process?

The term STLC stands for Software Testing Life Cycle. It is a process that we used to test software and assured that the quality standards are met with the requirements. In several phases, several tests are carried out systematically. During the development of the product, phases of the STLC are performed multiple times until a product or result is deemed suitable for release.

What is meant by STLC?

The term STLC stands for Software Testing Life Cycle. It is a sequence of specific steps performed during the testing process for the assurance that the software quality objectives are met with the requirements. The STLC process includes both verification and validation of a product or result.