A global sportswear brand successfully migrated their Salesforce Commerce Cloud (SFCC) platform to a headless architecture, achieving significant performance improvements and business gains. The migration strategy focused on incremental changes, such as choosing the right frontend framework, planning for traffic management, ensuring business continuity, and synchronizing user sessions. This approach allowed the team to unlock modern frontend capabilities without risking their core business. With the new architecture, they saw a 10x improvement in load testing, reduced deployment times, increased mobile conversion rates, and improved developer productivity. The migration is an ongoing journey, with plans for future improvements, but the team remains confident in their direction thanks to enhanced monitoring and regular performance audits.