I have a two websites on a VM with WHM/cPanel and MySql.
I am looking to move this into Azure and use vertical scaling. Visits to the website are usually stable but three or four times a year there is a big increase in traffic which historically has caused big problems for the existing host.
I am looking to move it into the A5-A7 range of servers for the vertical scaling.
I cannot find anything anywhere about whether there is any downtime involved when Azure scales up my VM from A5 to A6 or whatever.
Does anyone have any experience with this and can give me a definitive answer as to whether there is downtime when using vertical scaling, and if there is any downtime involved then the kind of downtime I would expect
Thank you for your time.