I came across a community question mentioning that REST API v1 is going to be deprecated. You can find the discussion here. However, I was unable to locate any official documentation confirming this. Could you please provide more clarity on the matter and share any official deprecation plans if available?
I have checked the discussion page. It is related to Adobe Photoshop product to call Remove Background API. The person is using python script to trigger the REST API.
It means they are not using the Adobe Commerce REST API. Hence, REST API v1 are not deprecated in Adobe Commerce.
