Tech Modernization at scale — Blog Series
Article Summary
Walmart's engineering team learned the hard way: breaking up a monolith without fixing team structure just creates a distributed mess.
Walmart Global Tech shares their multi-year journey modernizing massive monolithic applications into microservices. This blog series introduction outlines the critical lessons they learned about the inseparable relationship between system architecture and team organization.
Key Takeaways
- Conway's Law works both ways: systems shape teams, teams shape systems
- First microservice attempt failed by sharing domain boundaries with the monolith
- Domain Driven Design became essential for identifying proper service boundaries
- Series covers CI/CD, testing strategies, resilience patterns, and DevOps transformation
- Goal: deploy every commit to production while maintaining quality gates
Critical Insight
Successful modernization requires redesigning both your architecture AND your team structure simultaneously, not sequentially.
