The 7 Phases of the System Development Life Cycle SDLC

Oftentimes, system analysts are tasked with identifying opportunity area gaps and generating organizational improvements to reach specific goals. Overall, the System Analyst is a professional who has strong interpersonal, technical, analytical, and management skills. In short, the iterative and incremental model works through multiple, repeated, and incremental cycles so developers can pinpoint which areas to improve based on previous deployments of the software. In the design phase, project members define the structure of project components as well as key elements of the system by defining the interfaces that will exchange data within the workflow. It’s very common for the project teams to use UML diagrams in the design phase to design the system’s architecture.

importance of systems development life cycle

First, you need to figure out or define what the problem is , then you need to figure out a good approach for solving it , and finally you need to go ahead and do it . System Development Life Cycle – A process by which systems analysts, software engineers, programmers, and end users build information systems. The steps in the SDLC process are roughly the same from one methodology to another. They tend to occur in this order, though some processes combine or execute them in parallel. In addition to bug fixes, models like Iterative development plan additional features in future releases. Upgrading a company-wide database to a newly-developed application is one example.

The agile methodology produces ongoing release cycles, each featuring small, incremental changes from the previous release. The agile model helps teams identify and address small issues in projects before they evolve into more significant problems. Teams can also engage business stakeholders and get their feedback throughout the development process.

Completing the verification and validation processes helps ensure the program’s success. Integration, system, security, and user acceptance testing is conducted during this phase as well. The user, with those responsible for quality assurance, validates that the functional requirements are met by the newly developed or modified system. The system development life cycle framework provides a sequence of activities for system designers and developers to follow. It consists of a set of steps or phases in which each phase of the SDLC uses the results of the previous one. Other life cycle development models like incremental, spiral, rapid application development and iterative, etc. and can further be used according to user’s requirements.


These design elements are intended to describe the system in sufficient detail, such that skilled developers and engineers may develop and deliver the system with minimal additional input design. The main phase of deployment stage is to put the solution in the production environment. Sometimes product deployment happens in stages as per the business strategy of the company. During this testing phase, QA and testing team may find some bugs/defects which they communicate to developers. The development team fixes the bugs and send it back to QA with the updated design document, if needed to re-test.

importance of systems development life cycle

Besides, we will analyze both pros and cons of applying the SDLC methodology. Once the project is tested (which also involves User Acceptance Testing ), it is deployed at the client’s end. Project is as good as it is thoroughly tested, which is why the tester role is critical in any SDLC effort. Testers test the software and validate that it’s behaving as intended as well as approving the beta version release once it’s properly tested and retested. Developers help develop scripts for automated testing and fix any system flaws or defects as testers identify them.

SDLC, or Software Development Life Cycle, is a set of steps used to create software applications. These steps divide the development process into tasks that can then be assigned, completed, and measured. The Waterfall development model follows a linearly sequential flow. In this methodology, the requirement analysis, designing, development, integration, testing, and deployment phases are clearly defined in separate phases and none of these phases overlap each other. The testing phases of the software development lifecycle help companies to identify all the bugs and errors in the software before the implementation phase begins. If software bugs are not resolved before deployment, they can adversely affect the client’s business.

Analysis and Specification

Ideally, System Analysts are highly skilled and knowledgeable in multiple operating systems, hardware configurations, programming languages, and software and hardware platforms. They are usually involved from the beginning stages of a project and up until the post-evaluation review of the solution. In addition to these reasons, it’s also extremely valuable to have an SDLC in place when developing software as it helps transform an idea project into a fully-fledged, functional, and fully operational system. If the thorough analysis phase ends with a positive outlook for the project, the design phase can begin. The design phase is where the real work starts, and company resources start to fund the project. It is also the phase where the team figures out what the finished product will look like once development is completed, omitting potentially risky design choices along the way.

It originated back in the 1960s when groups of developers would band together to figure out the most efficient way to manage an information system. The requirements are divided into groups at the start of the project. best social trading networks The SDLC life cycle process is repeated, with each release adding more functionality until all requirements are met. In this method, every cycle act as the maintenance phase for the previous software release.

If a client asked you to design a chat function for their website, you could use your analysis to understand all the features they want and how their current site functions. Develop best trading analysis detailed data and process models including system inputs and outputs. Ensuring that projects are developed within the current and planned information technology infrastructure.

As computing power increases, it places a higher demand on software and developers. Companies mustreduce costs, deliver software faster, and meet or exceed their customers’ needs. SDLC helps achieve these goals by identifying inefficiencies and higher costs and fixing them to run smoothly. Once the team has completed the requirement analysis process, it is time to gather all the requirements for the project in a document. Furthermore, they need the client to see all the requirements the team has gathered and validated. This step is needed before the development team starts working on the project.

Agile seeks to release software cycles quickly, to respond to a changing market. It can also lead to a project going off-track by relying too heavily on customer feedback. Tasks often hold up the development process, such as waiting for test results or compiling code so an application can run. SDLC can anticipate these delays so that developers can be tasked with other duties. A prototype is like one of the early versions of software in the Iterative software development model.

importance of systems development life cycle

This tool provides a framework for guiding developers in the process of software development. Organizations can use various SDLC strategies such as waterfall, V-model, iterative, spiral, and agile models. The software development life cycle refers to the process followed by software developers to develop high-quality software products. 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. The company might be trying to meet or exceed expectations for their employees, customers and stakeholders too.

If you installed a chat feature, you might use this time to assess its final functionality compared to the original request. If parts of the process took longer than you would have liked or if you receive feedback from the client, you can take what you learned and apply it to future projects. Using the previous chat feature example, your development team would begin the coding process or installation of a widget depending on the decisions the team made in the previous phases. For example, you may discover it’s cheaper and easier to add a third-party widget to the site rather than create your own function. In the second part of the planning stage, consider using the organization’s objectives, interviews with employees, clients, suppliers and consultants, and competitor research to help you develop your ideas.


The procedure can help software teams in validating the functional and non-functional features and requirements of projects. The software development life cycle is a systematic process that aims to produce upscale software that meets customer expectations. The sixth phase is when the majority liteforex review of the code for the program is written. Additionally, this phase involves the actual installation of the newly-developed system. This step puts the project into production by moving the data and components from the old system and placing them in the new system via a direct cutover.

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. Baselines are an important part of the systems development life cycle. These baselines are established after four of the five phases of the SDLC and are critical to the iterative nature of the model . The waterfall model is a methodology used in software development and project management.

How to choose the SDLC model?

Ideation is the first among seven phases of the existing system development life cycle. Its purpose is to define the product idea and determine what user problem the future solution should solve. Oftentimes, development teams aren’t involved in this SDLC stage since the client starts looking for programmers when the product vision already exists.

System analysts collect facts from existing system users in order to develop limitations and details. They use different data gathering techniques such as interviews, observations and surveys. This is an attempt to understand all aspects of the current system and eventually indicate how things may be improved by a new system. This lesson covers the design phase of the system development life cycle . Review the definition and basics of the SDLC and dive deeper into the design phase, including its key pieces, sample deliverables, and how to determine whether to move into the next phase in the life cycle.

Developers and software engineers use it to create effective plans and designs. They also apply the various SDLC stages to develop innovative software products. Cross-function teams use the SDLC to collaborate across different software development stages. The first release of a software application is rarely “finished”; there are always more features and bug fixes. After deploying your code, you continually recieve reports from users and through error monitoring and crash reporting.

Establishing appropriate levels of management authority to provide timely direction, coordination, control, review, and approval of the system development project. Deliver quality systems which meet or exceed customer expectations when promised and within cost estimates. The design stage takes as its initial input the requirements identified in the approved requirements document. For each requirement, a set of one or more design elements will be produced as a result of interviews, workshops, and/or prototype efforts. Innorobix Automation is an expert at using the Ignition software platform for creating custom software applications. To develop a system in Innorobix, we arrange tasks into phases , involve users for whom the system is being built and develop procedures the company would like to have in place for their employees to follow.

The purpose of this step is to find out the scope of the problem and determine solutions. Resources, costs, time, benefits and other items should be considered at this stage. SDLC can be described along a spectrum of agile to iterative to sequential methodologies. Agile methodologies, such as XP and Scrum, focus on lightweight processes which allow for rapid changes along the development cycle.

The task is to gather, discuss, and describe user requirements for the future information system and ensure that programmers have enough data to build the right product. Custom software development project may become an incredibly challenging task for multiple C-level managers. The numerous technical details and uncertainties are often a barrier to achieving desired goals in the end.

Conclusion: The Process for Software Development

Considered one of the most popular methodologies for SDLC, the Spiral model is an exceptional solution for risk handling. THis model’s key differentiator is its diagrammatic visualization which resembles that of a spiral with many loops across the spiral which can vary from project to project. In this phase, the QA team also helps improve code coverage through automated tests and using resources from both the back-end and the front-end of the system.

Each task must have a measurable output (e.x. document, decision, or analysis). A WBS task may rely on one or more activities (e.g. software engineering, systems engineering) and may require close coordination with other tasks, either internal or external to the project. Any part of the project needing support from contractors should have a statement of work written to include the appropriate tasks from the SDLC phases. The development of a SOW does not occur during a specific phase of SDLC but is developed to include the work from the SDLC process that may be conducted by external resources such as contractors. It is very important to select the right model for developing your application. Development and testing processes are carried out based upon the choice of development methodology.

Steps in the System Development Life Cycle

The main goal of the testing procedures is to report, monitor, resolve and retest software components until they reach the quality standards defined in the initial SRS. Many teams use documents such as RTM to trace the main requirements of the project and see how they affect each other. In the development phase, the developers start working on the actual project.

Access powerful tools, training, and support to sharpen your competitive edge. Includes the design of application, network, databases, user interfaces, and system interfaces. A feasibility report for the entire project is created at the end of this phase.

The system is monitored for continued performance in accordance with user requirements and needed system modifications are incorporated. Operations continue as long as the system responds to the organization’s needs. When modifications are identified, the system may reenter the planning phase. Systems development specialists at Innovative Architects possess extensive experience in managing these type of projects.

Explore the waterfall model and discover the advantages and disadvantages of this model. Every hardware or software system will go through a development process which can be thought as an iterative process with multiple steps. SDLC is used to give a rigid structure and framework to define the phases and steps involved in the development of a system.

Implementing SDLC is all about quality, reducing costs, and saving time. Embracing the 7 stages, along with SDLC principles, will improve your quality assurance practices, increase your project success rate, and reduce rework. The following diagram shows the complete life cycle of the system during analysis and design phase. If you’re producing a software application, keeping security in mind can be critical to the success of your project.

In most use cases, a system is an IT technology such as hardware and software. Project and program managers typically take part in SDLC, along with system and software engineers, development teams and end-users. System Development Life Cycle – It is a process of creating information systems, and the models and methodologies that people use to develop these systems. In Innorobix, SDLC process includes PLC software, SCADA as well as Manufacturing Executive System design. The SDLC process was designed to ensure that end-state solutions meet user requirements in support of business strategic goals and objectives. SDLC is used to develop, maintain and replace Information System.

Leave a Comment

Your email address will not be published. Required fields are marked *

Shopping Cart
Essay Help Guaranteed to Boost Your Grade