Software development

System Development Life Cycle an overview

Furthermore, developers will often create a software requirement specification or SRS document. If you haven’t yet started your journey as a software developer, you might ask yourself, “Is software development for me? ” Here are some signs that this career path might be one that you will enjoy.

what are the stages of the system development life cycle

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. C++, PHP, and other programming languages are examples of common programming languages. The model can be viewed as a blueprint for success; following it blindly doesn’t necessarily guarantee success, but it increases the likelihood that the customer will be happy with the results. Software development is a broad topic, and it can cover everything from web design tools and online forms to more robust machine learning or back-end systems. Whether your team is involved in writing code in the browser or doing more robust development, they need a roadmap.

Building Informatics-Savvy Health Departments: The Systems Development Life Cycle

Then, they iteratively enhance versions over time until the complete software is ready for production. The team produces a new software version at the end of each iteration. The V-model (which is short for verification and validation) is quite similar to the waterfall model.

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.


Software developers use this as a guide to ensure software is produced with the lowest cost and highest possible quality in the shortest amount of time. The goal of this phase is to create an application that can be tested by potential users. Interested in the phases of the what are the stages of the system development life cycle systems development life cycle (SDLC)? The Hunter Business School Web Application Design and Development program has a class that teaches the system development Life cycle. Each has advantages and disadvantages that must be considered in order to make an informed selection.

what are the stages of the system development life cycle

With web application security add an extra layer of protection to your application and stop DDoS attacks and data breaches before they even occur. SDLCs can also be more specifically used by systems analysts as they develop and later implement a new information system. Their output may be closer or farther from what the client eventually realizes they desire. It’s mostly used for smaller projects and experimental life cycles designed to inform other projects in the same company.

Which SDLC model is the best and most commonly used?

During the Analysis stage, the focus is on gathering and understanding the requirements of the system. This includes conducting interviews, studying existing processes, and identifying stakeholders’ needs. The gathered information serves as a basis for designing a system that meets users’ expectations and addresses organizational challenges. “Super users” can help in the training process to assist those with less technical experience and understanding.

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. These standards should be used within the context of the Forensic Laboratory’s Secure System Development Life Cycle. They are designed as a checklist to ensure that proper attention is given to all aspects relevant to the secure implementation of developed software.

SDLC Phase 6: Acceptance, Installation, and Deployment

From there, the business systems analyst can look into conducting the first stage of the systems life cycle. The most flexible of the SDLC models, the spiral model is similar to the iterative model in its emphasis on repetition. The spiral model goes through the planning, design, build and test phases over and over, with gradual improvements at each pass.

  • Quality analysis includes testing the software for errors and checking if it meets customer requirements.
  • Phases 4 through 7 represent an iterative process whereby a prototypical ES is evolved, and the final prototype developed through these iterative phases is installed in an operating environment.
  • Usually, this part of the SDLC process happens in a limited way at first.
  • Interested in the phases of the systems development life cycle (SDLC)?
  • If the data is identical between the manual process and the system, then the system is deployed.

They did not have a proper concept of what the possibilities would be on the short term. Results of software testing must be documented and approved by the IT Manager and the System Owner. All changes to a system must be formally controlled via the Forensic Laboratory change control process, as defined in Chapter 7, Section 7.4.3.

Agile System Development Life Cycle Methodology

As soon as the software is in the testing stage, it is almost impossible to go back and change some features that were not initially thought over. 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. This means that the systems development designers will likely be IT specialists or software developers. Developers are now responsible for more and more steps of the entire development process.

what are the stages of the system development life cycle

The system specification represents the technical requirements that will provide overall guidance for system design. Because this document determines all future development, the stage cannot be completed until a conceptual design review has determined that the system specification properly addresses the motivating need. Object-oriented analysis and design (OOAD) is the process of analyzing a problem domain to develop a conceptual model that can then be used to guide development. During the analysis phase, a programmer develops written requirements and a formal vision document via interviews with stakeholders. System Design is a critical stage in the SDLC, where the requirements gathered during the Analysis phase are translated into a detailed technical plan.

Implementation and Integration Stage

At this stage, the goal is to deploy the software to the production environment so users can start using the product. However, many organizations choose to move the product through different deployment environments such as a testing or staging environment. 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 spiral model combines the iterative model’s small repeated cycles with the waterfall model’s linear sequential flow to prioritize risk analysis.