User blog comment:Brandon Rhea/How we're testing the fandom.com domain migration/@comment-76.19.121.132-20181009234232/@comment-20644-20181010015848

The migration is not required for HTTPS support. We decided to do it all at once because that was the most efficient approach, rather than rolling out HTTPS to the wikia.com domain only to migrate everything over to fandom.com later.