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Featured Offers Available in ECS 3.0

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You may now set the “offers” parameter to “Featured” in ECS 3.0 AsinSearch requests. Setting “offers” to “Featured” will allow you to retrieve featured merchants’ offers using ECS 3.0. A featured merchant is a vendor with whom Amazon has a special partnership and whose offers are prominently featured on Amazon product detail pages.  Prior to now, accessing featured merchants’ offers was only possible in ECS 4.0.

Here is a sample ECS 3.0 AsinSearch request that shows how this new parameter value works:

Remember to replace “SUB_ID” with your developer token or subscription ID and “ASSOCIATE_TAG” with your own Associate ID or “webservices-20”. Since featured merchants do not exist on,, and, this new parameter value only applies to the US version of ECS 3.0.

Modified 2/1/2021 – In an effort to ensure a great experience, expired links in this post have been updated or removed from the original post.
Jeff Barr

Jeff Barr

Jeff Barr is Chief Evangelist for AWS. He started this blog in 2004 and has been writing posts just about non-stop ever since.