This article first appeared on GuruFocus.

Amazon (AMZN, Financials) is steering its engineers toward using its Kiro AI coding tool and away from new third-party options, according to an internal memo referenced in a Reuters report. The company said it will continue supporting tools already in use but does not plan to approve additional external AI development software.

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The memo, posted on Amazon’s internal news site, told employees they play a central role in shaping in-house tools as the company refines Kiro. The service, launched in July, supports code generation using natural-language prompts and builds on components developed with Anthropic, though not specifically its Claude Code product.

The guidance would limit Amazon employees from adopting tools such as OpenAI’s Codex, Anthropic’s Claude Code and startup Cursor’s software. Amazon has previously assessed the risks associated with outside tools. Earlier this year, the company designated OpenAI’s Codex as Do Not Use and briefly applied a similar label to Claude Code before reversing that decision.

Amazon has invested heavily in AI, including about $8 billion in Anthropic and a seven-year cloud-services partnership with OpenAI. The company has also sought to counter a perception that it trails rivals in AI developer tools as companies like Google and OpenAI move quickly to expand their ecosystems.