I think Zappos is a probably a pretty good proxy. They too had a very different culture to Amazon at the time of acquisition, but I believe it has largely remained intact many years post-acquisition.
Amazon as a company has many flaws in its culture (if we are to believe the reports), but they seem to do acquisitions pretty well and know when to leave things alone and let them do their thing.
Amazon as a company has many flaws in its culture (if we are to believe the reports), but they seem to do acquisitions pretty well and know when to leave things alone and let them do their thing.