SAN FRANCISCO, Nov 24 (Reuters) - Amazon ( AMZN ) suggested its

engineers eschew AI code generation tools from third-party

companies in favor of its own, a move to bolster its proprietary

Kiro service, which it released in July, according to an

internal memo viewed by Reuters.

In the memo, posted to Amazon's ( AMZN ) internal news site, the

company said, "While we continue to support existing tools in

use today, we do not plan to support additional third party, AI

development tools."

"As part of our builder community, you all play a critical

role shaping these products and we use your feedback to

aggressively improve them," according to the memo.

The guidance would seem to preclude Amazon ( AMZN ) employees from

using other popular software coding tools like OpenAI's Codex,

Anthropic's Claude Code, and those from startup Cursor.

That is despite Amazon ( AMZN ) having invested about $8 billion into

Anthropic and reaching a seven-year $38 billion deal with OpenAI

to sell it cloud-computing services. Amazon ( AMZN ) has been fighting a

reputation that it is trailing competitors in development of AI

tools as rivals like OpenAI and Google speed ahead.

Kiro is Amazon's ( AMZN ) homegrown AI tool for code generation, the

technique for creating websites and apps using just plain

English commands. It relies in large part on versions of coding

tools from Anthropic, but not specifically Claude Code.

"To make these experiences truly exceptional, we need your

help," according to the memo, which was signed by Peter

DeSantis, senior vice president of AWS utility computing, and

Dave Treadwell, senior vice president of eCommerce Foundation.

"We're making Kiro our recommended AI-native development tool

for Amazon ( AMZN )."

The internal guidance comes on the heels of Amazon ( AMZN ) widening

Kiro's availability last week to a worldwide audience along with

some new features.

Spokespeople for Anthropic, OpenAI and Cursor did not

immediately respond to requests for comment. An Amazon ( AMZN )

spokesperson confirmed the memo.

Codex, Cursor and Claude Code have become popular ways for

engineers to quickly spin up new services. Cursor, for instance,

was valued at nearly $30 billion after completing a funding

round earlier this month.

In October, Amazon ( AMZN ) revised its internal guidance for

OpenAI's Codex to "Do Not Use" following a roughly six month

assessment, according to a memo reviewed by Reuters. And Claude

Code was briefly designated as "Do Not Use," before that was

reversed following a reporter inquiry at the time.