Systems Development Life Cycle



The first iteration implements a small set of the software requirements, and each subsequent version adds more requirements. Continuously monitor applications and containers in production for new open source vulnerabilities and alert teams where they work so they can patch issues quickly before a potential exploit occurs. Teams can perform a final scan for open source security, license or operational issues before the application is deployed to production. Threat Modeling- Bring your application design weaknesses to light by exploring potential hacker exploits. Spot design flaws that traditional testing methods and code reviews might overlook. Software Testing Optimization- Help your team prioritize and create the right level of security testing.

systems development life cycle

The SDLC provides a framework that outlines the tasks that need to be performed in each phase of software development. Organizations can use the SDLC process to provide structure when designing and building of applications. It adds 4th generation programming languages, rapid application development prototyping and risk analysis to the waterfall model. The system requirements are designed and a preliminary system design is created. Though this model reduces risk to a large extent, it may not meet the budget and is applied differently for each application. Even one of the most current and popular systems analysis and design textbooks does not depart from tradition, emphasizing that the SDLC is still primarily comprised of seven phases. Although not immune to criticism, Hoffer, George, and Valacich believe that the view of systems analysis and design taking place in a cycle continues to be pervasive and true (p. 24).

This phase involves solving issues faced by the customers when they use the software. When an issue is solved by the developers or software engineers, the software is tested to ensure it functions well. In the maintenance phase, the software can be enhanced to add other new features. This is the first phase of software development that involves getting the requirements from clients. Business analysts meet with the clients and collect their requirements . These analysts use the collected information to prepare the business requirement specification . A requirement specification document is then prepared to provide guidelines for other phases in the SDLC.

Key Differences Between Agile Project Management & Waterfall?

The best software performance articles from around the web delivered to your inbox each week. Waterfall is still used by many companies around the world, however, Agile is rapidly gaining ground. Regardless of the method used, there are practices that reduce risk and increase the chances of success. Several variants of Agile have emerged since the signing of the Manifesto. Scrum defines specific roles and events, known as ceremonies, as part of its practice.

systems development life cycle

If the software will be brand-new, they will simply proceed toward defining its requirements. In either case, the goal is to create a detailed definition of what the end product is intended to achieve. Product and project managers convene to discuss the scope of the project. At this stage, they may create early written deliverables such as project plans, schedules, cost estimates, and procurement requirements. In other words, an agile organization can successfully adapt the SDLC framework to its development model. The team sets the entire product-development plan according to the initial requirements-gathering and analysis. However, this first phase can lead to a failed product if the team doesn’t properly assess the market’s needs.

The database development life cycle involves planning, designing, implementing, and maintaining a database system so it would fulfill an enterprise’s functional requirements. It is closely connected to a system development life cycle; the database development process begins right at the Requirements phase of an SDLC. The waterfall approach is best suited for a simplistic, yet systematic approach to meet the exact requirements of the client.

System Development Life Cycle: Maintenance

When actual results meet the expected results, the final product can be deployed. Test teams are always under pressure to reduce development time without compromising on the quality. This helps management to understand the risks and make changes to certain delivery processes for that AUT.

When modifications are identified, the system may reenter the planning phase. A software application typically undergoes several development lifecycles, corresponding to its creation and subsequent upgrades.

  • However, IT management pertains to providing a flawless experience to the users as it ensures that the IT services continue working in optimum condition without any breakage or failure.
  • The SLDC was not handed down on stone tablets; the number of steps and details may vary somewhat depending on design philosophy and your organization’s unique needs.
  • In the event of a problem, possible solutions are submitted and analyzed to identify the best fit for the ultimate goal of the project.
  • In this phase, the software is sent to a testing environment where it is tested by test engineers.
  • All these roles are involve in one or more stages and contribute directly or indirectly in the project.

This is why the Software Development Life Cycle is the most general term for software development methods. Regardless of method, they typically run in cycles, starting over with each iteration. The Home Care unit of General Hospital utilized the Parallel Installation method for approximately 60 days before the “go live” date. The Director of the Home Care facility noted that this process took longer than anticipated but was well worth it in the long run. Once the “go live” date was reached the new system performed quite well, with a minimal amount of disruption. Finally, some anecdotal evidence was gathered to help us evaluate each vendor as a potential finalist. Vendor C sponsored an annual User Conference where users could share experiences with using the product, as well as provide feedback to be incorporated into future releases.

Of the approximately 25 users, half were trained the first week and the rest the next. Clinicians had to perform a live visit with one of their patients using the new system.

Sdlc Phase 3

Further, as conditions in the real world change, we need to update and advance the software to match. In other words, the team should determine the feasibility of the project and how they can implement the project successfully with the lowest risk in mind.

Much research has been conducted in the area of user involvement and its relationship to system success (e.g., Ives and Olson, 1984; Baroudi, Olson, and Ives, 1986; Tait and Vessey, 1988). Therefore it was satisfying, from a pedagogical standpoint, to know that concepts taught in a classroom setting were being utilized in a real-world environment. This paper describes the use of the SDLC in a real-world heath care setting involving a principle component of a regional hospital care facility. The paper can be used as a pedagogical tool in a systems analysis and design course, or in an upper-division or graduate course as a case study of the implementation of the SDLC in practice. First, a review of the SDLC is provided, followed by a description of the case study environment. Following, inferences and observations from the project are presented, along with lessons learned. Finally, the paper concludes with implications for the three areas of research, practice, and pedagogy, as well as suggestions for future research.

systems development life cycle

The use of SDLC ensures that such an undertaking is properly documented and structured, making what seems impossible entirely doable within a reasonable timeframe. From the planning phase to the maintenance phase, each part is crucial to the success of any project in the software engineering industry.


The systems development life cycle , while undergoing numerous changes to its name and related components over the years, has remained a steadfast and reliable approach to software development. Although there is some debate as to the appropriate number of steps, and the naming conventions thereof, nonetheless it is a tried-and-true methodology that has withstood the test of time. This paper discusses the application of the SDLC in a 21st century health care environment. Specifically, it was utilized for the procurement of a software package designed particularly for the Home Health component of a regional hospital care facility. By following the stages of the SDLC, an effective software product was identified, selected, and implemented in a real-world environment. Lessons learned from the project, and implications for practice, research, and pedagogy, are offered.

systems development life cycle

This model provides discipline and gives a tangible output at the end of each phase. However, this model doesn’t work well when flexibility is a requirement. There is little room for change once a phase is deemed complete, as changes can affect the cost, delivery time, and quality of the software. Once the system requirements have been clearly defined, an in-depth analysis should be performed in order to determine what functionalities the system must have, and how to best implement them.

A system development life cycle helps to lower the complexity of developing a system from scratch. It is important to have an SDLC in place as it helps to transform the idea of a project into a functional and completely operational structure. In addition to covering the technical aspects of system development, SDLC helps with process development, change management, user experience, and policies. The SDLC has been a part of the IT community since the inception of the modern digital computer.

But this domain is usually outside the software development life cycle as the product is already being used by the end-customers. This is the crux of the software development life cycle where the actual development or coding of the product takes place. There are a few languages and platforms that are popular for this purpose. With an agile approach, by contrast, the organization continuously reviews its product’s progress and seeks regular feedback from users. As a result, the team is less likely to build an entire product or significant new functionality without knowing there is a market for it.

Before actual deployment, the software should be documented for future reference. It enables developers to design and build high-quality software products. This is because they follow a systematic process that allows them to test the software before it is rolled out. V-Model essentially verifies and validates the codes and both development and testing teams work in close coordination to avoid any errors in the final deliverable product. An SDLC is the series of phases , that takes a business case to completion. It involves the identification of issues followed by implementing solutions with recurring efforts. One of the oldest SDLC models, the Waterfall model is a linear, sequential approach that is popular in IT product development; it emphasizes the need for consistently advancing from one stage to the next one.

The developers will need to be ready to address requests for enhancements, bug fixes, and new features. These requests will come from many sources—sales, executives, customers—but the product management team will determine which of these initiatives make it onto the product roadmap for developers to work on. At this stage, the team is confident it has fixed all defects and that the software has been built to the agreed-upon goals and specifications. 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. Choosing the correct SDLC can assist you in swiftly and successfully developing the system you require. As a result, IT consulting companies in New York are able to work in a regulated and well-organized setting, following a planned approach to the development of new solutions. Team members can depart and be replaced rather smoothly because SDLCs include well-structured papers covering project goals and processes.

Last-minute improvements are made, which could very well shift the overall focus of the information system toward a more efficient direction. The output of the first phase of SDLC is project plans, schedules, cost estimations, Software requirement specification , Software design specification and procurement requirements.

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