Software Development Life Cycle: Phases and Models


Maintenance can be considered the most extensive part of the SDLC since the lion’s share of resources is spent to support the product after it has already been developed. To notice any malfunctions in the system and immediately neutralize them, it is necessary to monitor its vitals in real-time. It is a FREE add-in for Microsoft SQL Server Management Studio that allows you to track and analyze SQL Server performance. In this case, the end-user takes an essential part in creating a prototype prior to developing the final product.

software life cycle model

It is critical for the project manager to establish and monitor control objectives while executing projects. Control objectives are clear statements of the desired result or purpose and should be defined and monitored throughout a project. Control objectives can be grouped into major categories , and relate to the SDLC phases as shown in the figure.


Organizing and reorganizing the steps of the SDLC will produce so-called models or methodologies. Corporations use the SDLC to define, build, and maintain software products. It is a detailed process that creates a software life cycle model comprehensive outline for the engineers’ workflow. They use the SDLC alongside the engineering manager to organize their workflow. However, the SDLC is also a part of the holistic product development framework.

software life cycle model

A natural choice for small teams and companies without strict formal processes. The big bang model is a high-risk SDLC type that throws most of its resources at development without requiring an in-depth analysis at the start of the cycle. An excellent fit for small projects with clear requirements that do not change over time. A tried-and-tested methodology with a logical progression of steps perfect for simple products. The higher management either signs off on the project or asks the team to go back a step in the SDLC and come up with a new suggestion.

How Micro Focus Value Edge Can Help with SDLC

Once the software engineers create the application, testers come into the role and check the functionality and security to ensure there are no vulnerable loopholes, glitches, and errors. After thoroughly testing the app, the client gets its application delivery. Detailed design documentation can aid the software developers and architects in smoothly executing the operations and rapidly conclude a best-in-class software. If you are currently working or want to make your career in the development domain, you must have a clear insight into software engineering models and methods. If you want to get more information about the main stages of custom software development, read this article. The most popular agile framework focuses on small teams of less than ten developers.

software life cycle model

Vulnerabilities may seem small on their own, but when tied together in an attack path, they can cause severe damage. Our red team models how a real-world adversary might attack a system, and how that system would hold up under attack. Defensics- Identify defects and zero-day vulnerabilities in services and protocols. Defensics is a comprehensive, versatile, automated black boxfuzzerthat enables organizations to efficiently and effectively discover and remediatesecurity weaknessesin software. Maturity Action Plan – Get recommendations establish or improve your software security stance. Building Security In Maturity Model – Measure and benchmark your software security program against other security programs and industry best practices.


Daily Scrum meetings help the whole team monitor progress throughout the project. And the ScrumMaster is tasked with keeping the team focused on its goal. This process can be used with any software developing life cycle model. While this shall be chosen when you are developing a system has user interactions. So, if the system does not have user interactions, such as a system does some calculations shall not have prototypes. Therefore, it may be required to choose the right SDLC model according to the specific concerns and requirements of the project to ensure its success.

  • Daily Scrum meetings help the whole team monitor progress throughout the project.
  • They will then focus only on those projects and test their work at the end of the sprint.
  • A big bang starts with little planning and quickly moves to the coding stage.
  • This procedure where the care is taken for the developed product is known as maintenance.
  • Naturally, this created quite a lot of problems at the end, when all the teams were trying to combine the fruits of their hard work.
  • We know the benefits and needs of aligning projects according to software engineering models and methods.

The difference is how these phases are structured and which one gets the largest share of the attention. An SDLC is essential because it provides detailed guidelines for product development. It helps minimize unnecessary errors and costs that may arise as a result of unplanned events.

Stage 4: Software Development Stage

With the adoption of faster and newer development life cycles, organizations are moving away from older SDLC models . With ever-increasing demands for speed and agility in the development process, automation has played a key role. Synopsys Application Security Testing Services offer the solution for applying AppSec testing effectively across your full application portfolio. Accelerate and scale application security testing with on-demand resources and expertise when you lack the resources or skills to achieve your risk management goals. The testing team evaluates the developed product in order to assess whether they meet the requirements specified in the ‘planning’ phase. Object-oriented analysis and design is the process of analyzing a problem domain to develop a conceptual model that can then be used to guide development.

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Agile methodologies, such as XP and Scrum, focus on lightweight processes that allow for rapid changes. Iterative methodologies, such as Rational Unified Process and dynamic systems development method, focus on stabilizing project scope and iteratively expanding or improving products. Sequential or big-design-up-front models, such as waterfall, focus on complete and correct planning to guide larger projects and limit risks to successful and predictable results.

systems development life cycle (SDLC)

IT firms prefer Agile for software projects, but other industries adapt their methodologies to provide quality work to their clients. The waterfall and prototype model features assure the seamless execution of the overall procedure and guarantee the desired application as the final result. As a result, the project team tries to eliminate the drawbacks and correct the software for the final release. When the software is finally active and live, the support team continuously monitors it and ensures its seamless functioning and quality of service.

SAD interacts with distributed enterprise architecture, enterprise I.T. This high-level description is then broken down into the components and modules which can be analyzed, designed, and constructed separately and integrated to accomplish the business goal. SDLC and SAD are cornerstones of full life cycle product and system planning.

Manage Business and Software Risk

Failure at this stage will almost certainly result in cost overruns at best and the total collapse of the project at worst. SDLC or the Software Development Life Cycle is a process that produces software with the highest quality and lowest cost in the shortest time possible. SDLC provides a well-structured flow of phases that help an organization to quickly produce high-quality software which is well-tested and ready for production use. The iterative incremental model requires the team to quickly deploy an incomplete version of the software at the end of each development cycle. Jumping into software development without a pre-defined plan is a recipe for overbudgeting, delays, and costly failures. Instead of rushing into a project, more and more companies are turning to SDLC strategies that enable them to ship high-quality software as quickly, safely, and cost-effectively as possible.


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