You can get a lot of compute reduction from graph-based execution and content-based caching (Bazel or RWX) before you have to resort to running fewer tests. although that may be necessary eventually
We are either going to need more compute, or better CI.
AI driven dev means more code/tests and more frequent changes trying to merge and deploy to production.
E.g. 10× the changes × 5× the test suite cost = 50× the compute (and higher peak compute demand due to parallelism).
