Zalando Auto-Approves a Third of PRs. Agents Made Them Bigger.
Zalando published 2.5 years of agentic engineering data across 250+ teams. The 20-40% pull request lead-time win came from a bot that auto-approves 33% of PRs without a human — while PR sizes climbed into the 1k-2k line buckets and per-commit cyclomatic complexity showed inflection points exactly where coding agents entered.
August 17, 2026 · 13 min read