Software development

What is Systems Development Life Cycle

By February 11, 2022 No Comments

The immediate benefit to the client is the constant realization of the benefits in terms of the expectations of the final deliverable. This approach also ensures that the provider can constantly measure itself to interpret the requirements of – and deliver the best solution to – the client. The tools that this methodology prescribes should have built-in quality and project control measures, ensuring that a certain quality level is maintained.

systems development life cycle phases

Every kind of project, from the simplest to the most complicated, benefits from the iterative methodology. In fact, developers sometimes employ it covertly by decomposing larger activities into smaller ones. A variety of alternative models, such as the incremental model, the V-model, and the Spiral, are also present in online sources. But with a closer look, it’s tough to spot any defining characteristics of these models or discernible distinctions from the previous two. If someone could explain the key distinctions between the iterative and incremental models, it would be great. Furthermore, the V model may seem impressive on the surface, but it’s really simply a Waterfall approach with tests added to strategic points.

Why is SDLC important?

Functional specifications should include security-related information such as technical features (e.g., access controls) and operational practices (e.g., awareness and training). Information security teams should review and provide feedback on this document prior to the detailed design phase. Software development can be challenging to manage due to changing requirements, technology upgrades, and cross-functional collaboration. The software development lifecycle (SDLC) methodology provides a systematic management framework with specific deliverables at every stage of the software development process. As a result, all stakeholders agree on software development goals and requirements upfront and also have a plan to achieve those goals.

Defect checking tools should be used to monitor and track identified defects during all testing phases. This provides the basis for making informed decisions regarding the status and resolution of any defects. Executing a project means putting your plan into action and keeping the team on track. Generally this means tracking and measuring progress, managing quality, mitigating risk, managing the budget, and using data to inform your decisions. Lack of control over the system changes due to a working version’s fast turn-around to address users’ issues.

Detailed Design Specifications

A security specialist shall be appointed to provide security advice for the project—this is usually the Information Security Manager. Difficult to define requirements at the beginning and difficult to change at a later stage. In the ideal situation, execution is so smooth that no effort is required when the integration happens. If it is possible, integrating a new system into a company should be automatic and streamline.

  • With a handle on all of the variables at play, you can start breaking the project down into more actionable steps.
  • Developers are unable to progress to the following age unless the previous one has been completed and approved by management.
  • Like other data-related projects, the activities in the analysis phase should include profiling the data in the source and target data structures.
  • Each phase has its own mini-plan and each phase “waterfalls” into the next.
  • Control may be methodical and automated to guarantee the system to deliver the expected outcomes.

As an example, in Scrum, each iteration is called Sprint; in RUP, an iteration is simply an iteration, and so on. In Kanban, iteration is the progression systems development life cycle phases of a single task from the first to the final column. At this step, the system is updated on a regular basis to keep it from becoming obsolete.


After project managers have a firm grasp of the customer’s demands and a clear idea of what must be built, the software engineering team may move on to the design phase. At this stage, the individual parts, modules, interfaces, and data types that make up the system are specified. System design may be done conceptually using a pen and paper; it defines the system’s form and purpose. Next, a comprehensive, in-depth design is created, taking into consideration all logical and physical needs in terms of functionality and technology. Once your project proposal has been approved, it’s time to move on to the project planning stage of the project life cycle. Oftentimes, the system development life cycle is confused with the software development life cycle.

systems development life cycle phases

Other steps which may appear include project initiation, functional specifications, detailed specifications, evaluation, end-of-life and other steps that can be created by splitting previous steps apart further. Once all planning and requirements are in place, the plans are handed over to the systems architect who can then start working on the design of the systems. Often the systems to be designed are based on software or IT infrastructure.

What are system development life cycles?

The development team combines automation and manual testing to check the software for bugs. Quality analysis includes testing the software for errors and checking if it meets customer requirements. Because many teams immediately test the code they write, the testing phase often runs parallel to the development phase. Here the system will be integrated into its environment and finally installed.

Venngage helps you make your communication visual, so that you can wow clients and keep your team aligned. But remember…your project isn’t complete until all of your documents have been handed over and approved by your client or stakeholder. A project retrospective is as much about reviewing the success of the project as it is about extracting learnings that can apply to future projects. Projects will never go without obstacles, and there will always be things to learn that will ease the progress of other projects. Using a project status report template, like the one below, will help make sure you don’t leave out any pertinent details when you’re communicating with stakeholders. This is where the majority of the project work takes place, and it requires constant monitoring.

The System Development Life Cycle (SDLC)

Any modifications to a document, once approved, should be reviewed and all impacted groups should agree on the change. Security teams should participate in the post-implementation review to confirm that the security capabilities deployed are satisfactory. At this time, the documentation of all security decisions made in support of the system or application is finalized and variances to the existing security policies and standards are noted. Where variances are permitted on a temporary basis, tracking is initiated to ensure that variances are resolved in accordance with an agreed-upon schedule.

systems development life cycle phases

In the closing phase of the project management lifecycle, you’ll conclude project activities, turn the finished product or service over to its new owners, and assess the things that went well and didn’t go so well. The NIST SDLC integrates risk management activities through the application of the NIST RMF. Every hardware or software system will go through a development process which can be thought as an iterative process with multiple steps. SDLC is used to give a rigid structure and framework to define the phases and steps involved in the development of a system.

Requirements analysis

Developers are unable to progress to the following age unless the previous one has been completed and approved by management. Developers have a clear understanding of the objectives they must achieve and the deliverables they must complete within a certain time frame, reducing the risk of wasting time and money. Analysis and insights from hundreds of the brightest minds in the cybersecurity industry to help you prove compliance, grow business and stop threats. Learners are advised to conduct additional research to ensure that courses and other credentials pursued meet their personal, professional, and financial goals.

Team Ahava 2

Author Team Ahava 2

More posts by Team Ahava 2

Leave a Reply

Call Now Button