What Is the Software Development Life Cycle? SDLC Explained

We will delve into the significance of each stage, emphasizing the critical role played by System Design in the overall process. 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. Many organizations subdivide their SDLC methodologies into a larger number of phases than the five referenced in NIST guidance, potentially offering closer alignment of SDLC phases and corresponding RMF tasks. Business analyst and Project organizer set up a meeting with the client to gather all the data like what the customer wants to build, who will be the end user, what is the objective of the product. Before creating a product, a core understanding or knowledge of the product is very necessary.

system development life cycle methodology

Instead of starting with fully known requirements, project teams implement a set of software requirements, then test, evaluate and pinpoint further requirements. A new version of the software is produced with each phase, or iteration. The term software development lifecycle (SDLC) is frequently used in technology to refer to the entire process of technology innovation and support. Rapid development cycles help teams identify and address issues in complex projects early on and before they become significant problems. They can also engage customers and stakeholders to obtain feedback throughout the project lifecycle.

2: Systems Development Life Cycle (SDLC) Model

The System Development Life Cycle encompasses a series of interconnected stages that ensure a systematic approach to system development. The stages include Planning, Analysis, Design, Development, Implementation, and Maintenance. Each stage contributes to the successful completion of the system, with System Design serving as a crucial component. Any Forensic Laboratory employee that is involved in software development shall have the appropriate training, experience, and qualifications for the required development work. Each of the testing steps in the development/configuration phase is tested against a step in the design phase.

system development life cycle methodology

After training, systems engineers and developers transition the system to its production environment. The design stage takes as its input the requirements already defined. This step involves decomposing the system into pieces, analyzing project goals, breaking down what needs to be created, and engaging users to define requirements. Standard and transparent processes help the management of large teams.

Software Reliability

Instead, we’re going to set the record straight on SDLC Methodologies. On the web, you’ll find articles that will define and explain a long list of SDLC Methodologies and give a brief summary of each so you can “choose” which is best for your project. It seems simple and harmless enough, but this is not how SDLC methodologies are used in the professional software development world.

With its customizable spreadsheet interface and powerful collaboration features, Smartsheet allows for streamlined project and process management. Use Smartsheet’s SDLC with Gantt template to get started quickly, and help manage the planning, development, testing, and deployment stages of system development. Create a timeline with milestones and dependencies to track progress, and set up automated alerts to notify you as anything changes. Share your plan with your team and key stakeholders to provide visibility, and assign tasks to individuals to ensure nothing slips through the cracks.

History and Origin of the System Development Lifecycle

The developers should thoroughly follow this document and also should be reviewed by the customer for future reference. It may also be helpful to choose your first software language to learn. Languages like C# and Java are still in demand by employers, but many new languages are emerging, too.

  • The software development lifecycle (SDLC) methodology provides a systematic management framework with specific deliverables at every stage of the software development process.
  • Before choosing a language, you need to know what you want to code, but simple front-end development languages like JavaScript, HTML, and CSS are good places to start.
  • Many organizations subdivide their SDLC methodologies into a larger number of phases than the five referenced in NIST guidance, potentially offering closer alignment of SDLC phases and corresponding RMF tasks.
  • As you take your first steps into a software development career, consider potential employers and particular areas of interest.
  • For instance, some devs from an Agile background might not have worked in DevOps.
  • System Design is a crucial stage in the SDLC as it bridges the gap between requirements analysis and system development.

The biggest drawback of this model is that small details left incomplete can hold up the entire process. Popular SDLC models include the waterfall model, spiral model, and Agile model. Important highlights of the DevOps model are continuous feedback, discipline, process improvement, and automation of as many manual development processes as possible.

Top 7 SDLC Methodologies: Phases, Models and Advantages

To produce high-quality software on time, development teams have to follow highly structured testing and processes to increase efficiency and reduce the chance for bugs to occur. These processes are called Software Development Life Cycles, and many such methodologies exist. Choosing the right SDLC methodology for your software development project requires careful thought. But keep in mind that a model for planning and guiding your project is only one ingredient for success.

The software development lifecycle (SDLC) is the cost-effective and time-efficient process that development teams use to design and build high-quality software. The goal of SDLC is to minimize project risks through forward planning so that software meets customer expectations during production and beyond. This methodology outlines a series of steps that divide the software development process into tasks you can assign, complete, and measure. Like other data-related projects, the activities in the analysis phase should include profiling the data in the source and target data structures. The requirements phase should include verifying that the assumptions made are true by trying the load of very small amounts of data.


This stage involves deploying the developed system into the production environment. This includes activities such as system installation, data migration, training end-users, and configuring necessary infrastructure. Implementation requires careful planning and coordination to minimize disruptions and ensure a smooth transition from the old system to the new one. SDLC is also an abbreviation for Synchronous Data Link Control and software development life cycle.

Agile is the mainstream methodology used in modern software development, and expands its influence beyond coding into many aspects of product development, from ideation to customer experience. As such, it rejects a one size fits all approach to process model adoption. And while there are a number of methodologies that have been tried, all of them except the Agile family has fallen out system development life cycle methodology of use today. Most solution providers use the waterfall life cycle approach for software solution development. The waterfall approach (refer Figure 14.3) helps to understand the extent of the residual risks and allows one to work conscientiously toward reducing those risks. Security is critical – especially when the purpose of the system development life cycle is to create software.

Another Form of SDLC: The Software Development Life Cycle

DevSecOps is the practice of integrating security testing at every stage of the software development process. It includes tools and processes that encourage collaboration between developers, security specialists, and operation teams to build software that can withstand modern threats. In addition, it ensures that security assurance activities such as code review, architecture analysis, and penetration testing are integral to development efforts. Most business organizations find it essential to use a standard set of steps, called a system development methodology, to develop and support information systems.