Is high availability or easier backups why people look to horizontal scaling though? I don't think that's ever been a primary reason for any story I've read. It

Is high availability or easier backups why people look to horizontal scaling though? I don't think that's ever been a primary reason for any story I've read. It's a great "bonus", but I can't think that it would be a compelling reason to choose horizontal vs vertical scaling. (There are other reasons, of course...)