Drop In Bing? Moving To HTTPS (SNI) Would Have Caused It

Last August, Google announced they’d be giving a small ranking boost for serving secured (HTTPS) content, in an effort to “encourage all website owners to switch from HTTP to HTTPS to keep everyone safe on the web.” As more and more sites migrate, Bing seems to have had trouble keeping up with uprising security methods and standards.
Bing’s Trouble Crawling TLS SNI
If your site has moved to HTTPS using an extension of TLS called SNI, there’s a good chance you’ve seen a drop in Bing crawling and rankings. This is due to, prior to this month, Bing’s inability to crawl sites with this specific implementation of site security. In fact, they’ve only been able to manually “whitelist” sites with this type of implementation. Unfortunately, this issue seems to prevent the transfer of equity to HTTPS URLs, even with proper one to one 301 redirects.
As shown below, the end result is a severe drop in crawling, ranking, and visits

Search Engine Land Source

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