Asana cleared 5 years of engineering work in 2 weeks with Codex

Asana used Codex to replace an outdated testing system in **two weeks**. The company says the migration had been estimated at **five years** of engineering work and cost about **$12K**.

Builders should look for bounded, testable maintenance projects that agents can execute repeatedly, especially migrations whose manual workload has kept them indefinitely deferred.

The material provides no implementation details, quality measures, staffing baseline, or calculation behind the five-year estimate, so it does not establish that similar compression transfers to other codebases.