Just like in design, the development process also starts with understanding the requirements of the client and studying existing systems. This facilitates the integration of development areas with the design elements which must have been created earlier. Also, there comes the need to carefully assess the hardware, software, personnel and database present. The analysis should be done in a way that it is neither time consuming nor information deficient.
Preliminary specifications are drawn up by reviewing each element of the project requirements. Larger projects will require additional analysis of the business and technical requirements. Sequel to carefully analyzing these details, there comes need to prepare a proposal which outlines the scope of the project including, responsibilities, time-lines, and costs.
This is a crucial stage of the project lifecycle. The user interface is developed as per the design finalized during the design phase and the business logic is implemented in a programming language best suited for the proposed requirements. In parallel, the database team will assess and understand the requirements and develop a data storage for the application based on a database schema. Sample data for testing and integration will be prepared at this stage. The implemented functionality would have unit tests along with test cases that would provide test coverage for the critical use cases defined for the project.
The programmers will start coding functionality as per the defined requirements. At this stage, the team needs to ensure that the platform they are choosing perfectly suits the client and most importantly his target audience. Also, the team is held responsible for timely delivery. Usually, for coding efforts, an Integrated Development Environment (IDE) is utilized to be more productive and efficient with their time.
Unlike the usability testing in the design phase, the development testing is much more intensive and detailed process. Some of the tests required to be carried out in this phase include: Integration testing, Functionality testing, Performance testing, Stress testing, Load testing and Compatibility testing. Both automated testing and manual testing is done with zero tolerance for failure.
Once the development stage is completed along with comprehensive testing and integration, the web application is deployed to production. After the site goes live, there is a need for continuous monitoring and upgrading the site with new enhancements. At this stage, we may encounter some changes that needs to be implemented and released to production with utmost care to ensure minimum service interruption during this process. Also, the potential need for additional requirements will be addressed using a change request. The statement of work for the requested changes would go through a formal review and approval process.