What is software development life cycle?

Sylwia Swierczek
Sylwia Swierczek, Social media junior specialist at WASKO Software
Published on Dec 22, 2020 in Cross Platform Developers Resources

Software development lifecycle (SDLC) is a method used for the design and development of high-quality software. The system is made up of seven stages. Each of them shows various stages of the creation of processes.

In this article, we would like to show you what SDLC is, what it means, and how its phases work.

What is SDLC?

The life cycle of software development (SDLC for short) is also known as the development process of software. This helps users to transform a newly generated project into an operating project. It can be said that it is a multi-stage, iterative, methodically organized operation. This approach is used to model or provide a structure for technical and non-technical activities in order to produce a professional system that meets or exceeds the standards of the organization.

In the application life cycle, the process consists of seven steps. SDLC offers a comprehensive plan that provides details about how the software can be designed, installed, and enhanced. In order to progress to the next step, each stage of the SDLC life cycle has its own product and determines its own process to be accomplished.

In certain instances, for a system project, SDLC is regarded as a model that decides organizational, personal or budgetary constraints.

Such a cycle has a beginning and an end, and the approaches appropriate to the lifecycle approach for system development ensure straightforward, distinct, and specified phases of work in information system preparation, design, testing, implementation and maintenance.

It also illustrates the various phases of the phase of creation so that users can see and understand at a given point what activities are involved. It is often used to remind them that when the system needs to be changed or enhanced, you can repeat steps or rewrite a previous step at any moment.

Importance of Software Life Cycle (SDLC)

  • - The project guide's position.
  • - Helps to determine, prepare and predict outcomes.
  • - Offers a standard set of tasks as a structure.
  • - Guarantees the delivery to the consumer is accurate and timely.

System Life Cycle Origin

In the 1960s, the term SDLC was created. Computers filled the entire room back then. Processes and equipment based on building large business structures had to be identified urgently. Teams were small in the past and consumers were less demanding, so there was no need to fine-tune a technique that at that time would steer the lifecycle of system development. Technology has advanced and processes have become more dynamic. Users want well-functioning technology. This is why models and frameworks have been developed to lead the organization through a structured period of system growth. Today's approach to technical system creation is customized to the ever evolving needs of a particular company and its users.

System life cycle phases

Initially, five steps consisted of the device development period. Currently, this system consists of seven levels, as we have stated several times. For system analysts who could better identify clearer steps to accomplish those objectives, this was beneficial.

Here is how each of the current phases looks in turn:

1. Planning
2. Systems analysis and requirements
3. System design
4. Development
5. Integration and testing
6. Implementation
7. Operations and maintenance


Planning is the first stage of the phase of system creation. In this step, decide whether you need a new framework to accomplish the strategic goals of your company. We establish an initial business strategy of the organization, which consists of obtaining infrastructure building capital to change or expand the service. The organization is seeking to reach or surpass the needs of its workers or clients. The purpose of the first step is to define the complexity of the problem and attempt to identify solutions. We consider capital, costs, time, benefits and many other elements at this level.

Systems analysis and requirements

Companies work on the root of the issue or the need for reform during the second level. To decide the best match for the ultimate goals of the project, all potential solutions should be evaluated while we are working on a problem. In this step, the functional specifications of the project must be considered by teams. We may ensure that the new system is capable of meeting particular requirements through system analysis or requires analysis. System analysis is critical to decide the needs of the organization as well as how they can be met, who will be responsible for each aspect of the project, and what type of schedule to anticipate.

System design

In the third step, the required specifications, functions and operations that will meet the functional requirements of the proposed framework that we want to implement should be outlined in detail. Hardware or software, networking features, processing, and processes are taken into account at this point in order for the device to achieve its objectives.


The fourth phase is when the real work begins - the developers are engaged to do the main work on the project. To guarantee the proper organization of the system's operation, a flowchart is used. This stage marks the end, as well as the start of development, of the initial part of the process.

Integration and testing

The fifth stage is to assess if the project proposed meets the original set of business objectives. The program is implemented in a test environment where, on the basis of design documentation given to it, the testing team tests the functionality of the device. This stage helps you to find certain bugs and glitches that are relevant to the developers. They correct detected errors and restore the quality control to the project. Tests will be conducted before the acceptable version is identified by the end user. Verification and validation will be the next step of this process to further ensure the software is successfully completed.


The sixth stage includes the newly created system's actual implementation. This move brings the design to production, takes the old system's data and components and positions them on the new one. Product implementation is often performed in phases, in accordance with the business plan of the organization.

Operations and maintenance

The final stage involves daily updates that are needed. Here, if he wants to, the end user can increase device performance or add new features, etc. After system implementation, users start using the established system.

SDLC benefits

SDLC implementation allows for the initial preparation and review of organized stages and priorities. Moreover, these approaches are not limited to one universal approach, but can be easily adapted to evolving needs.

A well-defined system life cycle should:

  • - Show an image of the entire project, define a schedule
  • - Defines the costs and deadlines of the project
  • - Ensure the verification of objectives and results
  • - Improve the quality of the final system thanks to verifications at every stage

Cycle disadvantages

  • - Some methods are considered inflexible, some suffer from outdated processes
  • - Difficulties arise in responding to changing circumstances
  • - Many programmers prefer to control and test the program on an ongoing basis, and here the tests take place at the end of the cycle
  • - The documentation needed can be overwhelming

The production cycle of software is a method that enables you to achieve the best quality and lowest cost software in the shortest possible period. It provides a well-structured phase flow that enables the company to deliver high-quality, well-tested and ready-to-use production software quickly.

Popular models include such models as:

  • • The method of waterfall is a continuous sequence of acts, just like the word, that flows downward. This conventional process of engineering that completes and stage when completed is often criticized for being too rigid.
  • • The V-shaped model is an adaptation of the Waterfall where testing is an integral part of closing each phase.
  • • The prototype approach encourages a strategy to develop several software techniques that allow various elements to be tested before they are fully developed.
  • Rapid Application Development (RAD) is a prototype method combination, but operates such that initial preparation for rapid prototyping and testing of possible solutions is not emphasized.
  • • The spiral method offers more process steps that are graphically depicted in the creation of the spiral and is commonly credited with providing greater consistency and process customization.
  • Agile methods are software-based systems that provide feedback through an iterative process and include Kanban or Scrum.

A systematic method for software development is the Software Life Cycle (SDLC). It is to guarantee the consistency and correctness of the software produced. Provides a structure for a common set of operations and products.

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About the author
Sylwia SwierczekSocial media junior specialist at WASKO Software

Graduate of Media Cultures with a specialization in New Media and a cat lover.

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