The delivery playbook for 2026
Software delivery changed fundamentally in 2025 as AI-assisted development went from curiosity to default. Your engineering practices need to catch up.
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If you haven't updated your engineering practices since AI-assisted development became the default, your playbook is already out of date. Here are three shifts we're seeing across our Delivery Mastery engagements.
Review culture matters more, not less
When a junior engineer could produce twenty lines of code in an afternoon, code review was a reasonable check. When they can produce two thousand, review is load-bearing. Teams that hadn't invested in review discipline are the ones that broke first.
Tests are now cheap; the question is which to write
AI can generate test cases at near-zero marginal cost. The skill that used to matter, writing tests at all, is now the skill of knowing which behaviours are worth pinning down and which aren't. That's a harder problem.
Throughput without review is a liability
Teams that embraced AI-assisted development without a matching lift in review, quality, and observability ended up shipping faster to production incidents. The top-quartile teams are the ones that saw this coming.