Amazon

AWS Emulator

Generally available

Local emulator of published AWS APIs for SDK and CLI tests on a computer or in continuous integration. Generally available on 11 Nov 2026, with no additional service fee. Unsupported operations return HTTP 501, and resource state stays in memory until the process stops.

Latest update Nov 12, 2026

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In the news1

  1. Amazon opens AWS Emulator for local API tests

    Amazon said on Nov. 11, 2026 that AWS Emulator is available so developers can send existing AWS SDK and CLI calls to a local process, with no additional service fee and no AWS account required for those tests. For operations it supports, AWS said it returns the same results as AWS for valid calls and the same errors for invalid ones. Unsupported operations return HTTP 501, resource state stays in memory until the process stops, and the source is published under CC0.

    aws.amazon.com

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