Software Development Life Cycle Stages or What is SDLC? / Hebrew

Software Development Life Cycle Stages or What is SDLC? / Hebrew

Habre, hello!

My name is Vitya, I work as a system analyst, and I also write about system analysis and analytics in general in my Telegram channel.

Today I want to tell you which ones stages of the software life cycle exist from the example of the Software Life Cycle Model (SLCM) algorithm.

I propose to consider the main stages of the life cycle on the simplest example – the development of an online clothing store.

What is SDLC?

SDLC is an algorithm for creating an IT product, which consists of 6 stages and covers the period from the moment the decision to develop it is made and ends when the software ceases to be used.

Each stage relies on the result of the previous one and provides a pool of necessary instructions for the execution of the next one.

The main function of SDLC is regulation and formalization of the development process. This is important for teamwork, when dozens of specialists are involved.

Stages of the software development life cycle

Key stages of the SDLC

The SDLC defines the tasks to be performed by the analyst or developer at different stages. This ensures that the final product can meet the client’s expectations and fit within the overall budget. So, it is very important for a developer to have prior knowledge about this software development process.

As I said above – the SDLC model includes six stages development of any software. Let’s consider each of the stages in more detail from the example of developing an online clothing store.

Stage 1: Planning and analysis of requirements

Stage 1 – Planning and analysis of requirements

Planning is an important step in everything like software development. Requirements analysis is also performed at this stage.

The information obtained as a result of this analysis forms the building blocks of the basic design. Project quality is a consequence of planning.

Thus, at this stage, a basic project is developed taking into account the available information.

For our online store, at this stage, we have to perform the following steps: determine the project goals and requirements for the online store, perform a competitor analysis, and determine the project budget and timeline.

Stage 2: Definition of requirements

Stage 2 – Definition of requirements

At this stage, all the requirements for the target software are clarified.

These requirements receive approval from customers, market analysts and all stakeholders.

This is achieved through the use of Software Requirements Specifications (SRS). This is a document that lists all the things that need to be defined and created throughout the project cycle.

Various mock-ups of the design of the future program are created for our store, analysts determine the technical requirements for the program.

Stage-3: Architecture design

Stage 3 – Architecture design

With the requirements defined in the SRS, developers can select the technologies for the project and design the future architecture.

An SRS (or any other well-defined requirements document) is a guide for software developers to come up with a better software architecture.

Stage 4: Product development

Stage 4 – product development

Then it is performed itself development product

For our online store, the necessary code is written, a database is created, payment systems and other necessary services are integrated in accordance with the developed project architecture.

This phase is usually the longest phase in the SDLC.

Stage 5: Product testing and integration

Stage 5 – Product testing

After the product is developed, the software must be tested to ensure that it runs smoothly.

At this stage, all possible defects are tracked, corrected and checked again.

This ensures that the product is SRS compliant.

For the store, site performance and security tests, error correction and elimination of shortcomings are carried out.

Also, at this stage, the necessary documentation for the project is drawn up. The documentation contains information on how to use the product and a description of its main functionality.

Phase 6: Deploy and maintain products

Stage 6 – Product deployment and support

After detailed testing, the final product is released in stages according to the organization’s strategy.

At this stage, the online store is deployed on the server, the domain name is configured, and final tests are carried out before launch. It is important to ensure its smooth operation.

After the final release of the product into the industrial environment, the product is monitored and supported to ensure uninterrupted operation.

For the store, an analysis of the site’s operation, changes and additions are performed in accordance with user requirements.

There are more than 50 recognized SDLC models in use today. But none of them are perfect, and each has its advantages and disadvantages for a particular software development project or team.

In the next article, I will analyze in detail all the most popular software development models. For now, let’s answer the question – “Why do we actually need such a cycle of software development?”

Why do we need SDLC?

SDLC is an approach followed by a software development organization when developing any software.

SDLC models were introduced to follow a disciplined and systematic method in software development.

In the software development life cycle, the software design process is divided into small parts that make the problem more understandable and easy to solve.

The SDLC includes a detailed description or step-by-step plan for designing, developing, testing, and maintaining software.


So, we now know that software development based on the Software Development Life Cycle (SDLC) is an important foundation for better and more structured software development.

In a world full of rapid technological development, SDLC stages play a crucial role in creating good and innovative solutions to help users and organizations.

At the end of the article, I suggest answering a few questions for better assimilation of the material:

  1. What is SDLC?

  2. What are the main stages of the SDLC?

  3. Why is SDLC important?

  4. What are the main objectives of SDLC?

Thanks to everyone who read this article to the end. Share your opinion in the comments. As I said above, in the following articles I will continue the topic of development and analyze the main SDLC models.

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