Office 365 is being completely rewritten in JavaScript
As a side note, Microsoft login echo system sucks big time in the context of office.  You have no idea which URL to use to login to office 365.  Between login/logout/timeout/other office apps/personal accounts/business accounts/forgot password workflows browser redirects to various URLs at least a dozen times.  And you keep seeing new URLs  I am wondering how less tech savvy people are coping with their authentication workflow.Depending on how you are authenticating you will see URLs with various words in them.loginlive
office.com
outlook.office.com
office365
outlook.com
account.live
products.office.com
login.microsoftonline.comand this list goes on and on...  I am wondering if they made an announcement that they are fixing their messy authentication workflow instead spending resources in rewriting office in JavaScript, that would have gotten this much attention on hacker news.