Software Development Life Cycle 

 February 4, 2022

The Software Development Life Cycle is a well-defined procedure for producing high-quality, low-cost software in the shortest time feasible. The SDLC aims to create unique software that surpasses all consumer expectations and needs. The SDLC is a step-by-step process that specifies and explains a thorough plan with chapters, or phases, that each has its methodology and deliverables. Following the SDLC improves development speed and reduces project risks with other production techniques.

How did the SDLC Evolve?

Computer science advanced significantly in the early 1960s. The rapid change inspired the birth of a manufacturing framework that eventually evolved into the SDLC we currently know.Before the 1950s, computers were not complex enough to require a systematic methodology such as the SDLC. The notion of structured programming arose as the complexity and size of programming expanded. Structured programming needed more tactical development models throughout time, resulting in the SDLC’s inception.

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How Does SDLC Work?

Phase of Preparation: All areas of design and product management are covered during the planning phase. Allocating resources, capacity planning, scheduling, cost analysis, and provisioning are common examples. The development team gathers feedback from project stakeholders such as customers, marketing, internal and external specialists, and developers throughout the planning phase. This information is distilled into a thorough list of requirements for developing the needed program. The team also analyses what resources are necessary to meet project needs and the cost of those resources. Expectations are also well specified; the team establishes what is needed in software and what is not. Project plans, anticipated prices, expected timetables, and procurement requirements are among the concrete outputs generated during this phase.

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Phase of Coding In an integrated development platform, the coding step incorporates system design. In addition, static code evaluation and code review for various devices are also included.

Phase of Construction: The building step takes the previously specified coding requirements and applies them to the actual construction of the program.

Phase of Testing:The program that has been produced is evaluated at this step. The testing team assesses the generated product(s) to see if the products match the requirements established during the ‘planning’ phase. Functional testing, such as unit testing, code quality checks, integration testing, system checks, security testing, performance test strategy, acceptance testing, and non-functional testing, are included in assessments. When a flaw is discovered, developers are contacted. Validated (fundamental) flaws are fixed, and a new software version is released. Automated testing is the most significant way to ensure that all tests are executed regularly and consistently. So it is when continuous integration technologies come in handy.

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Phase of Distribution: The team must pack, manage, and distribute releases across many environments throughout the release process.

Phase of Deployment: The program is formally released in to the production environment during the deployment phase.

Phase of Execution: The use of the program in a production setting is part of the operational phase.

Phase to Monitor: Various aspects of the program are checked during the monitor phase. For example, the overall system efficiency, user experience, new security risks, and an examination of defects or mistakes in the system are all possibilities.

What is the Significance of the SDLC?

  • It establishes a uniform structure for activities and deliverables.
  • It makes project planning, costing, and scheduling easier.
  • It simplifies project management and control.
  • It gives all stakeholders engaged in the development process more insight into all areas of the life cycle.
  • It accelerates development, enhances client connections, and lowers project risks.
  • It reduces project management costs as well as the final manufacturing cost.
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What SDLC Methodologies or Models Are There?


Waterfall: The waterfall technique is the oldest, simplest, and most organized. Every step is dependent on the outcome of the preceding one, and it all happens in order. This methodology establishes discipline and produces a measurable result after each step.
When flexibility is required, however, this strategy does not perform effectively. Once a phase is judged complete, there is minimal space for adjustment because it might influence the program’s cost, delivery schedule, and quality.

Agile: Continuous release cycles are created using the agile technique, with each release including minor, incremental changes from the prior one. The product is tested after each iteration. The agile paradigm assists teams in identifying and resolving minor difficulties in projects before they become major concerns. Teams can also involve corporate stakeholders in the development process and solicit their opinions.

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Lean: The lean software development technique is based on lean manufacturing ideas and practices. The lean principles foster greater flow in work processes and develop a culture of continuous improvement. The following are the lean principles:

  • Reduce waste and increase learning
  • Decisions should be made as late as feasible
  • Deliver as soon as you can
  • Boost your team’s confidence
  • Develop a sense of trustworthiness
  • Build comprehensively

Big Bang Model: This high-risk SDLC approach focuses most resources on development and is best suited to small projects. It lacks the other approaches’ detailed requirements specification stage.

Iterative: In the iterative method, every development cycle produces an incomplete but operational version of the software.The initial iteration implements a limited range of software needs, with each successive version adding more. The final iteration comprises the whole list of requirements.

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Spiral: A project’s unique risk characteristics drive the development process in the spiral approach to development. First, the development team assesses the project and decides whether the previous process models should be included.

V-Shaped: Verification and validation processes happen in tandem in the V-shaped model. Each verification step has a corresponding validation phase, and the model is organized in a V-shape, with each development phase having an associated testing phase.

Best Practices for the SDLC:


Effective communication throughout the entire team is the most critical best practice to incorporate into your SDLC. The more aligned and organized you are, the more likely you shall succeed.

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The following are signs of a well-implemented SDLC:

  • The implementation of a complete application security program that works.
  • Standards for code quality.
  • Collaboration between teams that works.
  • More efficient workflows.
  • Throughout the life cycle, teams should be involved in each other’s work.

It is essential to hire a company that truly understands the process of developing software. Obii KriationZ Web LLP – Software Development Company in Bangalore – complies to the ISO/IEC/IEEE 12207 standards.

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