Custom errors when web role is failing (or not running)
When i update the web role (incresing web roles, starting, suspending, ...) there is a short moment (or pretty long) when the web role is not responding. Customers than may see just browser error page "the page is not accessible" or "the server is not responding". In my opinion there should by allways some nice, user-friendly, response like "We are currently upgrading your application, please wait a few minutes. Thanks" with company logo or something.
Jan V commented
there are several servers along the way from customer HTTP request (firewalls, load balancers,..) some of which may find out, that my web role is not responding and send back output from some other web server (existing on cloud, or outside..)