Google May Discontinue Its AJAX Crawlable Guidelines
Does your site use AJAX? Well, Google may stop crawling those pages. More details to come from Google as early as next week.
Gary Illyes from Google commented during a panel at SMX West that since Google was able to render your full page starting back in May 2014, it may discontinue the AJAX crawlability recommendations offered in the Google Developer center.
Gary said you may see a blog post at the Google Webmaster Blog as soon as next week announcing the decommissioning of these guidelines.
Gary did add a personal opinion during the panel that sites built completely in AJAX do not provide the best user experience to their users.