Summary & Key Takeaways ​

• Large Cypress E2E test suites can experience significant run time increases, impacting developer velocity.
• Harness CI's Smart Orchestration aims to reduce test execution times for growing suites.
• It identifies and runs only relevant tests based on code changes, prioritizing critical paths.
• The system can distribute tests across multiple runners for parallel execution.
• This approach helps maintain fast feedback loops even as test coverage expands.

Our Commentary ​

We've all been there: the test suite that starts fast and then slowly becomes a behemoth. The idea of "smart orchestration" to only run relevant tests is compelling. I wonder how effective these systems truly are in practice, especially with complex dependency graphs. It feels like a constant battle to keep CI fast.