Improving the establishment of the Software Development Life Cycle (SDLC) process is dependent on a reliable method and a well-defined approach to ensure getting from point A to B. If you are starting to expand your background in the world of development, you need to have a full understanding of the SDLC.
SDLC is one approach that creates software with excellent quality and reduced cost in the shortest period. SDLC provides a comprehensive plan on building, modifying, maintaining, and substituting a software process.
SDLC follows several stages, which involve planning, design, building, testing, and deployment. Among the widely used SDLC models are the waterfall, spiral, and Agile.
How the SDLC process operates
SDLC is vital in minimizing the software development cost while at the same time enhancing the quality and compressing the production time. Through SDLC methodology, this attains its divergent objectives by strictly adhering to the plan that eliminates the general pitfalls to software development projects.
The SDLC process plan begins by examining the current systems for errors or irregularities. Then, this defines the project development life cycle of the new system. The SDLC methodology promotes the software through the different stages such as design phase in SDLC, development, testing, and deployment. By preventing costly errors like inability to seek the end user’s suggestions, the testing phase in SLDC can lessen the redundant rework and unnecessary fixes.
SDLC phases and best practices
Below are some of the SDLC examples, best practices, and stages that promote the system works in an efficient, smooth, and productive means.
Identify existing issues. This involves problems that may be costly within the organization when left unattended. This SDLC stage seeks inputs from all the firm’s stakeholders, clients, sales personnel, industry experts, and software developers. By scrutinizing the pros and of the current process, then the goal is to make necessary enhancements.
Conduct proper planning. In this SDLC planning phase, the team provides its requirements for what the new software should have, along with the budget allocation and needed resources. Also, it identifies the involved risks sub-plans for mitigating the potential problems. In this SDLC phase, this requires the creation of a Software Requirement Specification document.
Design phase. In this design phase of SDLC, this initiates the detailing of software specifications into a design plan known as the Design Specification. All stakeholders are requested to do a plan review and provide their feedback and suggestions. It’s vital to create a plan and integrate the stakeholder inputs into this document.
Prevent failures. When failure occurs at this stage, this can certainly bring cost overruns at their best and total project collapse at its worst.
Building stage. This stage attempts to create what you need. This SDLC stage entails software development by actual code generation. Once the early steps have been held in detail, this stage will be the least complicated.
Testing. This SDLC phase validates whether the goal is attained. In this stage, defects and deficiencies are checked. Several issues are resolved until the product has satisfied the original specs.
Deployment. This is when everything is used and this SDLC process initially occurs with limitations. Based on the end users’ feedback, several modifications are being undertaken.
Maintenance. This is a step closer to the objective. As observed, the plan is not usually perfect. With change as the only constant in the world, people have the option to update and advance the software to match the ever-changing needs of the end users.
With the prevalence of the DevOps movement, this brought changes to the SDLC in several approaches. Most software developers are currently tasked for increasing steps of the project development life cycle. As seen, the value moves to the left. In case the development and Ops teams employ the same skills to identify performance and track down defects from inception to the final completion of the application, this provides a similar language and increased handoffs between groups. APM tools can be employed in development, quality assurance, and production. This maintains the use of similar toolset with the whole project development life cycle.
SDLC types in action
The most notable SDLC models are cited as follows.
Waterfall. This is the oldest and most basic SDLC model. Using this SDLC methodology, one phase is completed then the next can be started. Every phase has its mini-plan and each “waterfalls” phase goes into the next. The largest model drawback is that small incomplete details can have an impact on the whole process.
Agile. This divides the product into cycles with faster working production. This SDLC methodology brings release succession. By testing every release provides feedback details that can be integrated into the succeeding version. Based on Robert Half, an American consulting company, the pitfall of this model is that too much emphasis on customer interaction can cause the project to be in the wrong direction in some instances.
Iterative. This model stresses the value of repetition. Software developers create an instant version at a relatively small cost. Then, they do validation and improvement through quick and successive versions. One main disadvantage is that it can consume resources quickly if left unattended.
V-shaped. This serves an extension of the waterfall model. This SDLC methodology evaluates every stage of software development. In the waterfall, this system can operate into roadblocks.
Big Bang. This is a high-risk SDLC model that puts most of its resources at the development and best to use for mini projects. It does not the thorough requirements definition stage present in the other methods.
Spiral. Among the SDLC types, this is considered the most flexible. This model is like the iterative model that stresses repetition. The spiral model undertakes the planning, design, build and test phases while at every pass gradual enhancements are undertaken.
Whenever the SDLC is accurately performed, this enables the highest documentation level of management control. Software developers know what they should create and why. Everyone accepts the upfront goal upfront and provides a better plan for achieving that goal. Everybody knows the required costs and resources.
Some pitfalls can lead an SDLC implementation as more of a challenge to development than a tool that helps us. When failures affect the clients, all users, and stakeholders, this can lead to poor system requirements at the outset. The SDLC co-exist if the plan is followed faithfully.