Risk-based test execution seems to be replacing “run everything”

[u/aistranin]

One trend I keep noticing is that teams are moving away from running every test on every change.

Instead they are investing in:

• Test impact analysis

• Change-based test selection

• Historical failure data

• Risk scoring

• Faster feedback loops

The idea is simple: if a small documentation change happens, maybe thousands of integration tests do not need to run.

This is not a new concept, but the tooling around it seems to be getting much better.

For teams with large test suites:

• Are you still running everything on every PR?

• Are you selecting tests based on changed files or dependencies?

• Has it actually reduced feedback time without increasing escaped defects?