A software development team was tasked with creating a complex e$-$commerce platform that integrated various functionalities such as product catalog management, secure payment processing, and order fulfillment. The platform required extensive testing and verification to ensure its functionality and reliability. The team selected a development method that involved a structured approach where each phase of the software development process had a corresponding testing phase. The development team followed a sequential path, starting with requirements gathering and system design, followed by module design, implementation, and integration. Each phase was accompanied by a corresponding testing phase, including unit testing, integration testing, system testing, and user acceptance testing. The model chosen for this project emphasized thorough testing and verification, ensuring that the e$-$commerce platform met the desired functionality and quality standards.

The design process used for this e$-$commerce platform is an example of the $\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_$ model.

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