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Life Cycle of Software Development

Life Cycle of Software Development

Date : Feb 26, 2021
Brainvire was a proud part of Imagine 2016


To develop the most effective doable software system within the most effective manner isn't any simple deed. Complex software system development comes might take tens or many hours to complete and need in-depth testing and editing once the project is complete. Without a solid framework to manage such a monumental task, money and time-related prices will get immensely out of management, resulting in AN unpleasant scenario for each shopper and developer(s). It’s extremely suggested for a software system development team to develop and cling to an efficient software system development list to contour the event method. Creating and corporal punishment such a list begins with a transparent understanding of the software system development life cycle.

What is the software system Development Life Cycle (SDLC)?

The software system development lifecycle describes the sequence of events that transpire throughout a software system development project from coming up with all the means through to maintenance. This in-depth method is related to many models, every as well as its own set of tasks and activities. Software development needs an incredible quantity of coming up with, beginning with the correct identification of project needs, their implementation, and readying measures. But after all, the strenuous method of software system development doesn’t finish there. After the reading section, software system developers should offer correct, timely maintenance services to make sure that the software system works optimally. Because the SDLC offers a basis for software system development projects coming up with, scheduling, and estimating deliverables, the method has been counteracted into phases.

What are the Phases of the software system Development Life Cycle?

The entire SDLC life cycle is split into these seven phases:

1. Requirement Extraction & Analysis
2. Feasibility Analysis
3. Architectural style
4. Building & cryptography
5. Testing
6. Installation & readying
7. Maintenance

All of those phrases should be dead in ordered order for the project to prove prospering. Any skipping, skimming, or half-measures can end in programming errors that may become dearly-won, frustrating, and discouraging to the shopper.

Phase 1: demand Extraction & Analysis


The first stage of the SDLC method is that the demand extraction & analysis section. This is wherever senior software system development team members and domain consultants arrange for quality assurance needs and acknowledge the risks concerned throughout the event method. The best course of action to require whenever starting a software system project is to team with extremely older developers UN agency perceives the project requirements’ ins and outs. You wouldn’t rent a freshman educatee to defend you in a very court of law, would you? No, we tend to didn’t suppose thus. Amid proceedings, you’d need to rent AN lawyer with the foremost expertise and skilled success that you just might realize, right? Well, constant goes for software system development. This stage presents a transparent image of the whole software system project’s scope, besides its anticipated roadblocks, opportunities, and directives. Phase one additionally helps corporations nail down the timeline to complete the work once they’ve established the main points and precise needs. From there, we tend to move onto the second section of the SDLC - the practicability section.

Phase 2: practicability section

Once your team has completed the necessity & analysis section, it’s time to outline and document your software system wants. The practicability method includes everything that ought to be designed and developed throughout the SDLC.

There are 5 sorts of checks concerned within the practicability phase:


1. Economic
2. Legal
3. Operational
4. Technical
5. Schedule

This method is conducted with the assistance of the software system demand Specification document, additionally called the SRS document.

Phase 3: field style

During this section, the software system style is ready as per the SRS document, which additionally is input for the fourth section of the life cycle. The design arranges, or style Specification incorporates a group of the stakeholder’s input, which is then followed by their feedback to boost upon the system.

There are 2 styles of style documents that are developed throughout section 3:

1. High-Level style (HLD)

High-level styles incorporate the name and a short description of every module. They showcase the whole field diagrams next to technical details and essential components. These styles additionally embody the interface relationship and dependencies between the modules and identifiable info tables.


2. Low-Level style (LLD)

Low-level styles describe the whole input and output for each of the modules, besides explanations addressing all kinds of dependency problems. This document includes an intensive listing of error messages, practical module logic, details of the interface, and therefore the info tables’ kind and size.

Phase 4: Building & cryptography

Now we tend to hit section four - wherever the magic happens. In the building and cryptography section, developers build the whole system by writing code in a very specific programing language, like JavaScript or Python. Phase 4, the event section, is that the longest within the life cycle, and for an honest reason! Typically, tasks are divided into modules or units and are then appointed to completely different developers to execute as a part of the cooperative effort. Developers leverage completely different programming tools, as well as compilers, debuggers, interpreters, and others, to come up with and implement the code. Developers should outline and establish a file word because it can facilitate their team to turn out organized, consistent code that’s testable throughout the succeeding development section.

Phase 5: Testing

Once the developers have finished the cryptography, it’s time to check it out! During the testing section, the software system is deployed within the testing set, wherever a top quality assurance team tests its practicality. This is wherever QA and testing groups realize bugs and defects inside the system. They then communicate these problems with the developers so that they will apply an answer to the matter. The testing method continues as long because it takes to make sure that the software system is stable, bug-free, and has no defects. Once everything has been tested and proven to be in excellent operating condition, developers go into the succeeding development section.

Phase 6: Installation & readying

The goal for this section is to deploy the software system to the assembly setting for distribution functions. Some stakeholders opt to deploy the merchandise in very testing or staging setting 1st before showcasing it to the general public. This allows stakeholders to play with the merchandise before emotional it, permitting any final edits to be created.

Phase 7: package Maintenance

Just like any piece of technology, a package needs maintenance and maintenance. For example, package updates should be performed frequently to confirm the best performance. Sometimes, testers miss things, and that they need to return and fix bugs and alternative relevant errors when the readying part. Stakeholders conjointly decide in a while that they want to feature new options to the system, that after all, should be enforced by a team of developers. The primary focus of this part is to confirm that the computer code performs as per the specifications mentioned in part 1: demand extraction & analysis.

What square measures the SDLC Models?

Their square measure many SDLC models followed throughout the package development method. every method follows a series of distinct steps that developers undergo to confirm a fortunate outcome. Here square measure many of the foremost well-liked SDLC models to decide on from:

Waterfall Model

The water model could be a classic approach to package development. during this methodology, developers end one part and so move onto subsequent. Each part involves its elaborate setup, and so every part spills over or “waterfalls” into subsequent part to confirm that every part is completed before moving on to the part that income it. A significant advantage of the water model is that every part is often totally evaluated for feasibleness and continuity before moving onto a subsequent part. However, if one thing goes wrong in an exceedingly explicit part, it will drastically slow things down in terms of moving forward. Skipping phases isn’t allowed during this model. Developers UN agency follow the water model should end apart before moving on, despite what.

Agile Model

What’s nice concerning the agile model is that it was designed with the shopper in mind. this technique powerfully focuses on input and user expertise. Using this customer/client feedback is a vital part of the method because it makes the package way easier within the finish. In response to the associate degree dynamic market, the agile model conjointly promotes a faster unleash of those package cycles. The only disadvantage with the agile model is that the project can generally believe heavily in client feedback, which may cause a project to go off-track or take longer to deploy.

Prototyping Model

In this methodology, the developers produce prototypes or incomplete sample versions of the package. This is an efficient model as a result of it helps developers take a look at the method additional accurately and visualize the parts. There square measure four forms of prototyping, as well as an organic process, progressive, throwaway, and extreme prototyping. This model tends to belong, leading to delayed readying times. though this might end in associate degree sad shopper, it might prove helpful to develop a paradigm if the package warrants it.

Spiral Model

The spiral model is that the most versatile of the SDLC models, which involves designing, designing, coding, and QA testing phases multiple times with gradual enhancements when every pass. This risk-driven method model helps development groups adopt the weather of each of the prototyping and water models. The spiral methodology could be a distinctive combination of fast prototyping and biological process concurrency.

Big Bang Model

Unlike the opposite SDLC models, the large bang model needs no or little design. this technique focuses on package development resources and cryptography practices, with developers understanding and implementing the wants as they are available. This model is only once performing on smaller comes and a little team of developers. it's conjointly evidenced helpful once deploying educational package development comes. For developers associate, degreed stakeholders UN agency have an imprecise list of necessities and an unknown unleash date, the large bang model is that the most pragmatic resolution to realize success.

In Conclusion

When it involves your distinctive package project, don’t place confidence in amateurs. rent a team of old, dedicated, and trustworthy package developers and engineers to confirm that your project is completed promptly.

I-Softinc has been providing best-in-class package development services for over twenty years. Our team consists of one,800 developers UN agency have in-depth, industry-specific expertise. We’ve been developing, implementing, integrating, configuring, and programming custom package solutions with success for a good form of businesses and industries. We perceive each facet of the package development life cycle and apply the principles mentioned during this article each day.

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