I perfectly understand that /flex2gateway/ has been deprecated in recent ACF versions, and that Flash is dead, yada yada. But I have a client here still running a desktop AIR executable which still uses it for data remoting. QUESTION: • Was CF2018 the last version to support the native /flex2gateway/ daemon? Lots of EOL posts, but not this answer to be found.

The last version of Adobe ColdFusion to support Flex2Gateway was ColdFusion 2016. ColdFusion 2018 officially deprecated Flex Remoting, and ColdFusion 2021 removed Flex integration entirely. Starting in ColdFusion 2025, all remaining Flash and Flex-related components, including event gateway features for data management and data services, have been completely removed. Reference: https://helpx.adobe.com/coldfusion/deprecated-features.html

Thanks @BK BK - You make that stuff look so easy to find 😳