SDLC: 7 Phases or Stages of the System Development Life Cycle, Models, Perks & More

ALM includes the entire lifecycle of the application and continues beyond SDLC. The best tip we can give you is to take time and acquire a proper understanding of the app development life cycle from the beginning. The development team ensures that the product is delivered on time and within budget. It also helps to reduce the frequency of mistakes, assuring consistent performance.

Although they share many similarities, the development of systems is more robust and complex in terms of its overall framework. The difficulty of designing a system from the ground up is reduced by using a system development life cycle. It is critical to follow the stages of the System Development Life Cycle in place since it aids in the transformation of a project’s concept into a fully functional and operational structure. A software requirement specification, or SRS document, is frequently created by developers.

Phases of the Project Management Lifecycle Explained

The initiation stage of the project management life cycle is when you meet with clients and stakeholders to understand their goals, motivations, and hopes for the project. This phase also involves the actual installation of the newly-developed application. The project is put into production by moving all components and data from the old system and putting them in a new one through a direct cutover.

systems development life cycle phases

This stage usually follows a testing period and a series of quality assurance tests. After all, successful tests have been completed and the final product delivered, it moves from an in-house project to that of an external business partner, who then takes care of distributing it to end-users. The end of this stage marks the official release date for the information system or application.


In traditional software development, security testing was a separate process from the software development lifecycle (SDLC). The security team discovered security flaws only after they had built the software. This led to a high number of bugs that remained hidden as well as increased security risks.

Set boundaries on project scope based on your deadlines and the resources at your disposal, and think about what skill set your future team will need. This stage ensures the system stays usable and relevant by regularly replacing outdated hardware, inspecting performance, improving software, systems development life cycle phases and implementing new updates so all standards are met. This also equips the system with the latest technologies to face new and stronger cybersecurity threats. Given the method’s complexity, there are various methodologies out there to help you manage and control the entire process.

Data Visualization Templates

In the maintenance phase, among other tasks, the team fixes bugs, resolves customer issues, and manages software changes. In addition, the team monitors overall system performance, security, and user experience to identify new ways to improve the existing software. Having separate build and production environments ensures that customers can continue to use the software even while it is being changed or upgraded. The deployment phase includes several tasks to move the latest build copy to the production environment, such as packaging, environment configuration, and installation.

systems development life cycle phases

Team members can depart and be replaced rather smoothly because SDLCs include well-structured papers covering project goals and processes. 7 stages of the System Development Life Cycle offer a lot of benefits to development teams who use it properly. The Waterfall model, one of the earliest SDLC models, is a linear, sequential technique popular in IT product development that emphasizes the importance of continually progressing from one stage to the next. Each stage must be completed in its entirety before moving on to the next; once a stage is done, it cannot be revisited. Developers must now enter maintenance mode and begin practicing any procedures necessary to address issues identified by end users.

Software project management

Without a planning phase, it is difficult to have an idea of what needs to happen and when it needs to happen. An extension of the waterfall model, this SDLC methodology tests at each stage of development. Each phase has its own mini-plan and each phase “waterfalls” into the next.

  • If the initiation phase is assembling your troops, the planning phase is deciding what to do with them.
  • A system development life cycle is a conceptual model that delineates the stages involved in developing and implementing a system.
  • As a leading provider of application security testing solutions, Veracode makes it easy for developers and security teams to integrate security throughout the SDLC.
  • However, repeated cycles could lead to scope change and underestimation of resources.
  • Ideally, testing should happen at every stage of the SDLC to address issues early when they are fastest and most cost effective to fix.

Software development teams, for example, deploy a variety of system development life cycle models you may have heard of like waterfall, spiral, and agile processes. What is the difference between the system development life cycle and the software development life cycle? The system development life cycle involves end-to-end people, processes and technology deployments, which includes software, infrastructure and change management.

The Benefits of SDLC

A post-implementation review ensures that the system or application is operating at a satisfactory level. This review involves soliciting user feedback on the overall effectiveness of the project and achievement of the requirements, timelines, etc. This information provides valuable insight for future projects and identifies potential shortcomings in the SDLC.

Knowing the benefits and drawbacks of a system development life cycle will aid you in making the best decision for your system. This can include resolving new issues that arise as a result of user reports or dealing with leftover bugs that were not able to be corrected before launch. In comparison to smaller systems, larger systems may require more maintenance phases. It entails determining and defining the project scope in order to develop a complete action plan for the project, as well as identifying the issues that the solution will address.

How can AWS help you with your SDLC requirements?

This document contains all of the software, hardware, and network specifications for the system they intend to create. When working in the same location as other development teams, will prevent them from overdrawing cash or resources. The project management process should ensure conformance with all aspects of the SDLC. In this context, conformance refers to ensuring that the documents itemized above are created and then reviewed and approved prior to the project moving on to the next phase of the SDLC.

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