AI and Claude: The internal rebellion that changed Amazon’s rules

Amazon is rolling out company-wide access to Anthropic's Claude Code and OpenAI's Codex for its estimated tens of thousands of developers, starting May 12. The move follows internal pushback after Amazon had restricted developers to its own Kiro agentic coding tool. Both tools will run on AWS and Amazon Bedrock. A staff engineer predicts the shift will move engineering focus from writing code line-by-line to reviewing AI outputs and validating system behavior. The decision reflects broader enterprise adoption of AI coding assistants, with Walmart reporting AI coding tools saved 4 million developer hours and over 95% of its engineers already using such tools.