What Is the Software Development Life Cycle? SDLC Models & Methodologies

By | September 5, 2022

In some use cases, asking end users for input is also a valuable source of info. Developers must follow the coding guidelines defined by their organization and programming tools like compilers, interpreters, debuggers, etc. are used to generate the code. Different high level programming languages such as C, C++, Pascal, Java and PHP are used for coding. The programming language is chosen with respect to the type of software being developed. It ensures that the software development process continues until all expectations are met.

software life cycle model

Software Development is the development of software for distinct purposes. For software development, there is a specific programming language like Java, Python, C/C++, etc. The entire process of software development isn’t as simple as its https://globalcloudteam.com/ definition, it’s a complicated process. Accordingly, it requires an efficient approach from the developer in the form of the Software Development Life Cycle . Waterfallrepresents the oldest, simplest, and most structured methodology.

The De-Facto Method of Creating Modern Software

In this article, we will focus on the software development life cycle as a whole and each of its phases separately. SDLC specifies the task to be performed at various stages by a software engineer/developer. It ensures that the end product is able to meet the customer’s expectations and fits in the overall budget. Hence, it’s vital for a software developer to have prior knowledge of this software development process. Proper planning and execution are the key components of a successful software development process. Software Development Life Cycle is the common term to summarize these 6 stages.

  • It ensures that all parties are in consensus before product development commences.
  • After collecting and assessing all the data, you have to create a project scope, which should define, what will be your final product or output at the end of this software development model.
  • If you are currently working or want to make your career in the development domain, you must have a clear insight into software engineering models and methods.
  • SDLC is not a methodology per se, but rather a description of the phases that a methodology should address.
  • Ensuring every phase of the SDLC accounts for security is vital, but do not overlook the value of a dedicated testing phase.
  • It is an extension of the waterfall model, Instead of moving down in a linear way, the process steps are bent upwards after the implementation and coding phase, to form the typical V shape.
  • At this stage, the goal is to deploy the software to the production environment so users can start using the product.

These professionals are always involved from the beginning phases of the development project. Iterative model.The iterative model depends on repetition and repeat testing. It means that new versions of a software application are created at the end of each stage. That allows catching potential errors and software life cycle model provides system engineers with an opportunity to continuously enhance the end product before it will be ready for the market. This conceptual model also makes it possible for developers to build a working version of the product early. That contributes to the less expensive implementation of changes.


Design documents typically include functional hierarchy diagrams, screen layouts, business rules, process diagrams, pseudo-code, and a complete data model with a data dictionary. These elements describe the system in sufficient detail that developers and engineers can develop and deliver the system with minimal additional input. During this stage of the system lifecycle, subsystems that perform the desired system functions are designed and specified in compliance with the system specification. Interfaces between subsystems are defined, as well as overall test and evaluation requirements.

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At end of life, plans are developed for discontinuing the system and transitioning to its replacement. Related information and infrastructure must be repurposed, archived, discarded, or destroyed, while appropriately protecting security. Conduct with a preliminary analysis, consider alternative solutions, estimate costs and benefits, and submit a preliminary plan with recommendations. Learn about six steps you can take to help prevent burnout among staff at your organization in this post by Robert Half’s Paul Flaharty.

System development life cycle: other models

Ultimately, all this ensures that the final product meets customer needs and can quickly respond to market demands. Companies are under more pressure than ever to deliver high-quality products in often unrealistically short time frames. In such a market, approaching software creation in any way that does not involve a pre-defined SDLC is not a business-wise move.

software life cycle model

Software development models function as the primary pillars for assuring the application’s quality, performance, and stability. It helps the project teams determine the core processes and efficiently support completing them. The team deploys the software to the production environment, where real users will use it. This typically involves creating and executing a deployment plan that outlines the steps and procedures for installing and configuring the software. This phase may involve installing the software on the user’s computers or devices or making it available through a web-based platform. To sum up, SDLC adds some structure and transparency to the complicated software development process.


Therefore, let’s take a brief look at their advantages and disadvantages. Software Development Life Cycle Models are a sequence of stages that are followed to reach the desired outcomes. The models provide guidelines for developers to produce the required application. Different solutions need various models for correct implementation. Below are some of the best SDLC models to use when preparing to develop an application. Founded in 1997, Devart is currently one of the leading developers of database management software, ALM solutions and data providers for most popular database servers.

software life cycle model

SDLC is a series of steps for developing, improving, and sustaining a software system. SRS is a reference for software designers to come out with the best architecture for the software. Hence, with the requirements defined in SRS, multiple designs for the product architecture are present in the Design Document Specification . In this stage, all the requirements for the target software are specified. These requirements get approval from the customers, market analysts, and stakeholders.

Conclusion: Benefits of the SDLC

Project management software helps you manage every phase of the project. ProjectManager is cloud-based work and project management software that has interactive Gantt charts that break larger projects into phases that reflect the project’s life cycle. Gantts are great for organizing tasks, linking dependencies and creating milestones. Our Gantt goes further, filtering for the critical path and then allowing you to set a baseline to track your progress when you execute the project. The software development lifecycle gives organizations a systematic, step-by-step approach to developing successful software from gathering the initial requirements for a new product.

To answer this question, you might recall your first music lessons when you were learning to play the guitar. You were told to place your fingers on the stings in the right position so that you could fret notes in the most convenient way possible…. The primary aim of this model is to make the overall process consistent and reduce the risks post-delivery of the solution. Monitoring, testing, fixing, and maintaining the software are post-development operations, which are highly necessary for every project.

Software Testing

Teams start thinking about security risks and measures during the first stage of the SDLC. A big bang starts with little planning and quickly moves to the coding stage. In many cases, developers are the only ones responsible for figuring out requirements, writing code, and checking the validity of a finished product. The agile approach requires the team to perform testing at the end of each sprint to ensure no potential exploits end up in production.

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