Contentful's infrastructure team has scaled the platform without major hiccups, despite rapid growth, by investing in teams focused on predictable performance, fleet management, and PaaS. They automate repetitive processes, ensure scalability, and abstract cloud infrastructure complexities to empower internal engineering teams. The team also fine-tunes microservice performance, automates database shard migrations (Zero-Downtime Resharding), and optimizes load distribution across shards. By analyzing real-time activity, they can rebalance the load and achieve optimal utilization of shared database shards. To help internal teams understand slow queries, they employ OpenTelemetry solutions to sample queries, trace requests, and replay suspect queries to establish root causes.