The first step was understanding the core functionalities of the legacy system and identifying the limitations within the new platform. I engaged with existing legacy users to understand their needs and pain points, which informed the foundational requirements of our new tool. Research and Understanding: This tool is needed to cater to the diverse business personas involved in travel management, each with unique requirements and technical fluency. I started with low-fidelity wireframes, focusing on the essential features identified during the research phase. This stage facilitated quick iterations and feedback from internal stakeholders, ensuring alignment with technical and business objectives. Usability Testing: Our commitment to user-centric design was evident in the five rounds of usability testing. We progressively refined the tool from low-fidelity mockups to high-fidelity prototypes, always keeping the end user's needs and expectations at the forefront. Starting with internal feedback allowed for rapid changes, while later rounds with various customer executives ensured the tool was tailored to their unique requirements. Material Design Integration: Adopting the MUI 2 design system for the web early in the process ensured consistency and accessibility while speeding up the development handoff. Adopting MUI components was pivotal in creating a modular and maintainable design framework.