Software development

Software Development Life Cycle: stages, phases

As part of their embrace of this methodology, many teams also apply an Agile framework known as Scrum to help structure more complex development projects. Scrum teams work in sprints, which usually last two to four weeks, to complete assigned tasks. Daily Scrum meetings help the whole team monitor progress throughout the project. And the ScrumMaster is tasked with keeping the team focused on its goal.

software development life cycle

SDLC and SAD are cornerstones of full life cycle product and system planning. SDLC is not a methodology per se, but rather a description of the phases that a methodology should address. The list of phases is not definitive, but typically includes planning, analysis, design, build, test, implement, and maintenance/support. In the Scrum framework, for example, one could say a single user story goes through all the phases of the SDLC within a two-week sprint. By contrast the waterfall methodology, where every business requirement is translated into feature/functional descriptions which are then all implemented typically over a period of months or longer.


Knowledge of its architecture, software, and hardware specifications is essential for the project. To ensure every component of application has been verified in terms of quality. Take advantage of your knowledge of the qualities necessary for the PV, PM, and TL. Only as a result of their coordinated work can a project be sustainable, built on time, and in line with the plan.

software development life cycle

As you can see, Software Development Life Cycle is a general concept that describes the process of developing applications or any other software. The idea is to build a software product of the highest quality and to lower the cost of delivering software by applying the best, proven, and most efficient practices of software development. SDLC can be easily adjusted to different project management methodologies and mixed with different development approaches. Combined with Agile principles and the Lean development approach, it becomes a powerful tool for building successful applications. Discipline, continuous feedback and process improvement, and automation of manual development processes are all hallmarks of the DevOps model. Over history, humanity was trying to come up with a perfect software development life cycle model.

This is done through an SRS document which consists of all the product requirements to be designed and developed during the project life cycle. SDLC is a process followed for a software project, within a software organization. It consists of a detailed plan describing how to develop, maintain, replace and alter or enhance specific software. The life cycle defines a methodology for improving the quality of software and the overall development process. This includes compiling requirements, studying user personas, and agreeing on the product’s purpose. During this phase, the team will also discuss the opportunities and risks of pursuing the project.

Benefits of the SDLC

The first formal description of the method is often cited as an article published by Winston W. Royce in 1970, although Royce did not use the term “waterfall” in this article. Royce presented this model as an example of a flawed, non-working model. Produces documentation necessary to facilitate future development and maintenance.

Builds evolve as teams add new features and improvements with each deployment. Whenever a user reports a bug or the team discovers a new flaw, the product moves back through its SDLC as many steps as necessary. Some severe defects require updates in the design stage, while most problems take the app back to the development stage.

Examine what business and technology leaders must do to achieve successful business transformation and take control of the risks that are inherent in software. Integrate Black Duck into bug and issue trackers to enable developers to track and manage open source issues found both in thetestandreleasephases. 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.

Software Development Life Cycle (SDLC)

The release phase involves the team packaging, managing and deploying releases across different environments. There are different methodologies that organizations can use to implement the SDLC, such as Waterfall, Agile, Scrum, V-Model and DevOps. Leads to cover the edge-to-edge requirements and assures of constructing a top-notch application. Develop the test and evaluation requirements that will be used to determine acceptable system performance. Helping developers better understand what they are building and why. Improving the quality of the software that the organization delivers.

  • Even more important is assembling a solid team of skilled talent committed to moving the project forward through every unexpected challenge or setback.
  • Attention to detail — Developer errors can increase the duration of the software development life cycle.
  • However, once a team has progressed beyond, they cannot go back to the prior stage.
  • Only as a result of their coordinated work can a project be sustainable, built on time, and in line with the plan.
  • With this methodology, changes in requirements don’t cause problems.

ISO 9000 describes standards for a formally organized process to manufacture a product and the methods of managing and monitoring progress. Although the standard was originally created for the manufacturing sector, ISO 9000 standards have been applied to software development as well. Like CMMI, certification with ISO 9000 does not guarantee the quality of the end result, only that formalized business processes have been followed. Among these, another software development process has been established in open source. The adoption of these best practices known and established processes within the confines of a company is called inner source.

Software Development Life Cycle

Understand how risks to projects from open source software can be managed through Software Composition Analysis. Business-IT Alignment is considered an important growth catalyst for organizations. The focus has shifted from ‘alienating’ to ‘collaborating’ IT processes with business objectives in order to stay innovative and competitive. Cybersecurity has holistically been a well-funded and highly prioritized process at most organizations to protect enterprise systems against cyber threats. To say that the software sits at the heart of an organization’s operational ability would be an understatement.

software development life cycle

In that case, developers will split the overall procedure into small iterations, and in each iterative circle, they will follow the waterfall model. The fundamental idea of developing this model comes from modernizing the waterfall approach by linking it with an iterative process. With the growing industry needs and urgent need for business-oriented applications, the demand for DevOps experts is immensely breaking the bracket. And, it is expected that by 2026, it will be the most appraised SDLC model. The waterfall and prototype model features assure the seamless execution of the overall procedure and guarantee the desired application as the final result. Spiral is one of the most flexible SDLC models, and experts are highly considering it for developing large-scale and complex applications through its modular approach.


There is no more measurable part of an organization than the sales team. A proof of concept is made to show that you have a problem/solution fit, to prove that you can meet your customer expectations, and to convince people that you can make a change. Simply put, the third SDLC phase is about delivering what you’ve planned. what are the software development models The developers can show the work done to the business analysts in case if any modifications or enhancements required. They validate the PO’s requirements from two sides and, after agreeing with each other, transfer the information to the Team. Ensure efficient communication between the team and the Product Owner.

What is the Software Development Lifecycle?

If the project is to proceed, the feasibility study will produce a project plan and budget estimates for the future stages of development. Michigan Tech’s SDLC includes six phases, during which defined work products and documents are created, reviewed, refined, and approved. Not every project will require that the phases be subsequently executed and may be tailored to accommodate the unique aspects of a projects.

Just like at the previous stage, it’s now important to collect as much feedback as possible , and make decisions based on that feedback. Before you go to the MVP, you will need to introduce the necessary improvements, add new features, and improve the user experience. Each stage of the SDLC has specific goals, objectives, and deliverables that must be completed before moving on to the next stage.

Training for a Team

Additionally, when changes do come up, they end up pushed into a change control process that can cause delays. Also, the fact that testing doesn’t happen until near the end doesn’t sit well with me. Years ago, we’d end up with a hard target date to reach, but the first four phases would run over. Then testing would end up with a smaller and smaller window of time to verify the software works as expected. The actual problem starts when the customer actually starts using the developed system and those needs to be solved from time to time.

This stage also defines the ways of the development that will meet all business demands taking into account time, budget, number of specialists, etc. Adapting to changing requirements or business needs is difficult, especially if the software development method is not agile. Based on this information, the development team can determine a timeline, a budget, and a list of key deliverables. This plan will serve as the foundation for the rest of the project and help the team stay focused and on track as they move through the later stages. This is where various software elements are monitored for performance, user experience, new security vulnerabilities, and more. By investing time in this phase, enterprises identify issues that may occur during the run and pull the strings necessary to achieve optimal performance.

The SDLC defines and outlines a detailed plan with stages, or phases, that each encompasses its process and deliverables. SDLC is also an abbreviation for Synchronous Data Link Control and software development life cycle. Software development life cycle is a very similar process to systems development life cycle, but it focuses exclusively on the development life cycle of software.