Building a software from scratch involves several stages where stakeholders come together for planning and making a roadmap of the entire project. The focus here is to ensure all major stages are executed with highest quality standards that yields quality software at an estimated cost-effective budget.
A software development agency leverages agile models to deliver optimal solutions at cost-effective prices. Choosing the right software development life cycle model can give your businesses an edge with faster time-to-market ideas, enhancing return on investments (ROIs).
A large percentage of organizations have adopted agile methodologies, with some studies showing that over 90% of companies practice them. Agile projects often have a higher success rate than those using traditional methods. Let’s explore this further.
Understanding Software Development Life Cycle
Software development life cycle (SDLC) is a structured framework or process that allows companies to build and launch quality solutions. This largely consists of well-defined phases as follows:
- Requirement gathering
- Planning
- Designing or prototyping
- Coding or developing product
- QA & Testing
- Deployment and Maintenance
Overall, it includes all the phases necessary for a streamlined development process of software ideas. This paves the way for smooth communication and collaboration among the team members working towards common goals.
What Is the Purpose of the Software Development Life Cycle (SDLC)?
- Provide a hassle-free framework to build the application from scratch or any other phase.
- Save cost in the development process
- Ensure meeting deadlines and quality parameters decided at the beginning of the project
- Launching an error-free software product that delivers key business goals
6 Main Stages of the Software Development Life Cycle
Stage-1: Requirement Gathering
The software is analyzed for a feasibility study. In this phase, key user requirements are gathered from all the project stakeholders. These requirements are integrated into building an SRS (Software Requirement Specification). So, inputs are taken from all the possible users of the final product. An in-depth study of the market is done to ensure you are building a valuable product with high demand.
Stage-2: Planning
The second stage involves careful planning of the entire project. This means making a project roadmap with timelines. As many as 42% of startups fail because there’s no market demand for them. So, the first two phases of feasibility study and planning play the most important role in the software development lifecycle model.
Stage-3: Designing Architecture
Software designers use the SRS reference to create unique and user-friendly interfaces. They focus on ensuring a smooth flow of functionality that encourages users to perform desired actions seamlessly. This means creating multiple designs for the product architecture that are integrated into the Design Document Specification (DDS).
Further, consultants and market analysts analyze DDS to choose the most logical designs for users. Factors like ease of use and attractiveness play a major role in choosing an appropriate design for the software application.
Stage-4: Developing Product
This is one of the longest software development life cycle phases and involves writing the application code, handling databases, and working on the final product on the server. Software developers use an appropriate programming language and tools to quickly build the application code. This means building a technology stack as per the project requirement.
For example, Flutter app development involves the use of Dart programming language, along with IDEs like Android Studio with the Flutter plugin or Visual Studio Code. Similarly, building a website will involve the use of HTML, CSS, and JavaScript technologies. Different projects require the use of distinct technologies.
Stage-5: QA & Product Testing
Software testing lays the foundation for launching an error-free product. Various manual and automated testing methods are deployed to detect and eliminate flaws in the software code. The QA team thoroughly inspects the software’s performance against the agreed-upon standards of the SRS. This means determining whether the application fulfills key requirements and business objectives.
Stage-6: Deployment and Maintenance of Products
Once the application is found to run perfectly well over the staging server, it is released to the target audience. The software support team stays tuned to the feedback or the user inputs to determine the best set of new features. Any issues faced by the users are also resolved with the maintenance team.
A Real Life Example of SDLC
Suppose you are building a mobile banking app the entire process can be well structured to ensure a reliable and functional product.
Requirements Gathering: The project manager and business analyst gather requirements from stakeholders (users, bank management) about the app’s features, functionalities, and target audience. They then create a detailed document, SRS, outlining the app’s requirements, features, and functionalities.
Planning and Analysis: The team assesses the technical and economic feasibility of developing the app, considering resources, timelines, and potential challenges.
System Design: The architecture of the app is planned, including the database, user interface, and security protocols. The layout and appearance of the app’s interface are designed to ensure a user-friendly experience.
Coding: Developers write the app’s code, implementing the features and functionalities outlined in the design phase.
Testing: Individual components or modules of the app are tested to ensure they function correctly. Different modules of the app are integrated and tested to ensure they work together seamlessly. The entire app is tested to ensure it meets the specified requirements and functions as expected.
Release: The tested app is deployed to the app stores (App Store, Google Play Store) for users to download and install.
Maintenance: The app is continuously monitored for errors, bugs, and performance issues.
Identified bugs and errors are fixed and released as updates. New features and functionalities are added to the app based on user feedback and evolving requirements.
Popular Software Development Life Cycle Model
Different software development models are suitable for varied projects. It is essential that you weigh project requirements to select the most suitable model for the business.
1. Agile Models like Scrum and Kanban
Focus: Iterative development, flexibility, and collaboration.
Characteristics: Emphasizes rapid development, continuous feedback, and adapting to changing requirements.
Suitable for: Projects with evolving requirements and a need for rapid adaptation.
2. Waterfall
Focus: Sequential and linear approach.
Characteristics: Each phase (requirements, design, implementation, testing, deployment) is completed before moving to the next.
Suitable for: Projects with well-defined and stable requirements where changes are unlikely.
3. Iterative
Focus: Development in cycles or iterations, with each cycle building upon the previous one.
Characteristics: Allows for early feedback and adaptation to changing requirements.
Suitable for: Projects where requirements are not fully known at the outset or where rapid prototyping and feedback are needed.
4. Spiral
Focus: Risk-driven approach that combines elements of both iterative and waterfall models.
Characteristics: Emphasizes risk analysis and management throughout the development process.
Suitable for Large, complex projects with high risk and uncertainty.
5. V-Model
Focus: Verification and validation throughout the development lifecycle.
Characteristics: Each phase of development (requirements, design, implementation) has a corresponding testing phase.
Suitable for: Projects where quality and reliability are critical.
Conclusion
Software development life cycle phases pave the way for designing business ideas into digital solutions. The right SDLC model emphasizes eliminating waste and delivering value to the customer quickly. So companies can ensure a smooth development process.
