Mercari's Shops Enabling Team reduced system costs by 67% over one year by consolidating two divergent architectures. The three-person team unified search/recommendation systems, migrated 80+ microservices from Cloud Run to GKE while preserving developer experience, and standardized identity management using Mercari PAT. The
•14m read time• From engineering.mercari.com
Table of contents
The Origin: Going Bold and Drifting ApartThe Breaking Point: The “Shops Enabling Team”The Operational Blueprint: Strategy, Synergy, and SpeedThe Audit: The Low-Hanging FruitThe First Tricky Bit: Convergence through UnificationThe Second Tricky bit: Moving to GKE without breaking DXThe Final Tricky bit: Breaking down inter-service wallsThe Leader’s Playbook: Leading Through LegacyThe Hidden Wins and Personal ReflectionSort: