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The System Development Life Cycle: A Phased Approach to Application Security

The System Development Life Cycle: A Phased Approach to Application Security

This phase begins when the developers build the application and deploy it in a test environment for quality assurance. After this, the testing team checks all the functional aspects of the software application to ensure that it meets customer needs. When the testing team finds defects, they need to report back to the developers on how to fix them. It’s worth noting that goal-oriented processes do not adhere to a one-size-fits-all methodology.

In the seventh and final phase, end users can fine-tune the completed system as necessary if they want to improve performance. Through maintenance efforts, the team can add new capabilities and features and meet new requirements set by the client. The second SDLC phase is where teams will work on the root of their problem or need for a change. In case there’s a problem to solve, possible solutions are submitted and analyzed to figure out the best fit for the project’s ultimate goal or goals. Another key reason why teams need to leverage an SDLC is, it’s important that they plan ahead of time and examine the structured goals and stages of a specific project.


Criteria should be defined for when a development activity may be assigned to these categories. The following video provides an overview of the project management lifecycle. This is a preview of the Google Project Management Professional Certification.

systems development life cycle phases

Effective control mechanisms shall be implemented to control multiple versions of software. Security mechanisms shall be independently tested and proved to work as claimed in system documentation. The Forensic Laboratory does not perform development or modification on purchased software packages.


As a result, developers will prepare software requirements specification documents to avoid them from overdrawing any cash or resources when working with other development teams. This vital stage helps determine the scope of any existing systems and define the objectives for their new designs. By developing an effective outline for the upcoming development cycle, they’ll theoretically catch problems before they affect development. Also, by setting a project schedule (which can be of key importance if development is for a commercial product that must be sent to market by a certain time), resources can be secured and funding garnered. After this cycle, developers will have a functional component of the final product.

systems development life cycle phases

Showing the goods off to potential buyers and end-users is possible with the iterative approach. Developers can adjust their course based on feedback from customers and find out whether they’re heading in the correct route. The software industry isn’t the only one benefiting from systems development life cycle phases the iterative paradigm. However, to build a basic understanding of the SDLC framework, a beginner developer should have a closer look at the detailed description of the stages. System development life cycles consist of six basic phases often repeated within each new project.


Advantages of the waterfall model include its predictability and scalability. The model clearly defines how much work can be accomplished in each step and how much time will be taken to reach the next phase. It also allows for multiple teams to work on different phases at once without overlapping their tasks. The analysis phase is the most critical stage in the design of any project. In this phase, all requirements and specifications will be defined and documented.

systems development life cycle phases

The business systems analyst should also look at what resources are needed while remembering what is available, and how it can be used. Want to improve application quality and monitor application performance at every stage of the SDLC? Try out Stackify’s Retrace tool for free and experience how it can help your organization at producing higher-quality software. The Agile SDLC model separates the product into cycles and delivers a working product very quickly.

What is system development life cycle testing?

SDLC has been around since the 1960s—a time when teams were more centralized. As the information technology sphere continues to evolve, the SDLC has been changed to keep up with the ever-changing demands in system development. Before starting development on a new system, it’s critical to understand how an SDLC will fulfil the overall requirements and help achieve the best result.

systems development life cycle phases

Tests should prove that the system complies with all design specifications and any required security measures. A configuration management system shall be implemented during development and implementation. The Forensic Laboratory configuration management process is defined in Chapter 7, Section 7.4.5. The security issues for a development must be identified by a formal risk analysis. The IT Manager, and other stakeholders as appropriate, shall review the completion of major phases of the system and provide formal sign-offs that make them personally liable and accountable for the development. Any Forensic Laboratory employee that is involved in software development shall have the appropriate training, experience, and qualifications for the required development work.

Steps to Secure the SDLC

This move is considered complex and uncertain but the risk is minimized substantially as the cutover often takes place during off-peak hours. Both end-users and system analysts should see a refined project with all necessary changes implemented at this time. SDLC models can thus assist projects in iterating and improving themselves until they are essentially ideal.

  • Improve chances of on-time, on-budget completion as users update in real-time, avoiding surprises during development.
  • The business systems analyst should have a good idea of what the company requires from a particular system while considering what the client needs from the company.
  • What is the difference between the system development life cycle and the software development life cycle?
  • Not to be confused with a project plan, which includes a much more in-depth description of how the project will be executed, a project proposal should be no longer than a few pages.
  • It’s crucial to have a plan for collecting and incorporating stakeholder input into this document.

It is a difficult endeavor that requires teamwork, adaptability, and good management standards. IT outsourcing nowadays makes technical solutions simple and economical. Work with the Global Cloud Team to ensure that your project is in excellent hands. The benefits of SDLC are limitless, and its implementation protects your business from financial risks, reputational damage, and legal penalties. In addition, specialists save time and resources through early misconception detection. You can choose one of the trending models and adapt it for your project to discover all advantages.

Systems Development Life Cycle

Phase 3 defines the necessary specifications, operations, and features that will satisfy all functional requirements of the proposed system. It’s where end users can discuss and identify their specific business information needs for the application. During this phase, users will consider the important components, networking capabilities, and procedures to accomplish the project’s primary objectives. In the first phase, the team determines whether or not there’s a need for a new system to reach the strategic objectives of a business. This is a feasibility study or preliminary plan for the company to acquire any resources necessary to improve a service or build on specific infrastructure. The development stage is when programmers write code and build the application based on the design papers and specifications that were created earlier.

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