Case Study: Intuit achieves microservices agility and 50% faster reads and 4× faster writes for TurboTax with Couchbase

Moving a mission-critical consumer application to a flexible microservices architecture

Intuit’s TurboTax, the best‑selling online tax‑preparation software serving millions and supporting over 250,000 concurrent users at peak, was held back by a monolithic architecture: teams were unproductive due to legacy code, every change required full builds and regression tests, and increasing inter‑service chatter degraded performance.

Intuit migrated TurboTax to a microservices architecture on AWS using Couchbase Server, leveraging in‑memory performance and cross‑datacenter replication for high availability and rapid deployment. The move freed teams to choose their tech stacks and iterate quickly, halved read response times, cut write response times by fourfold, and reduced intra‑service chatter by 20%.

Intuit