The Review Bottleneck: Why Teams Write More Code but Ship Slower in 2026

The Bottleneck Moved, and Most Teams Haven't Noticed For twenty years, writing code was the constraint. Requirements, architecture, review, and deployment all had time to keep pace because the writing step was slow enough to be the natural governor of the system. That's no longer true. AI coding assistants and autonomous agents have accelerated code generation dramatically. CircleCI's 2026 State of Software Delivery report measured a 59% increase in average engineering throughput last year. Deve