per engineer per week on manual QA
of post-merge bugs are discoverable with manual testing
of eng time spent on E2E test maintenance
Because the alternatives all have worse ROI.
$100k+/yr
Adds headcount without adding shipping capacity. QA Engineers don't want to do manual testing all day. You've traded one coordination problem for another.
2-3mo + 10% eng time
Playwright, Selenium, etc. Pulls senior engineers off product work. Creates ongoing maintenance burden. Tests go stale. Flaky tests erode trust.
Opportunity cost
Every extra day in the release cycle is a day your competitors are shipping. Thoroughness is good. Thoroughness that costs you the market is not.
Ito doesn't add work. It removes work that shouldn't exist.
Connect your repo. See what it catches before you commit to anything. No integration work required.