They bought Pillpack. They also announced a big partnership with Berkshire that went... nowhere? I also know of a big secret-project kinda effort, where they were employing research scientists, and other people with very specialized knowledge of protein design... all those people are no longer at Amazon.

I think the Berk partnership led to Amazon care (and probably this).

Amazon Pharmacy still exists though and I'm sure you know there are always many projects within Amazon that don't become public until much later.