Whats mean instance * hour in azure
<p>Hi I need to buy a subscription in azure with two DB and 1 Basic App. 
Anyway I don't understand what stand for instance * hours. 
I wrote an B2B site in aspnet that has to be run in this subscripotion.</p>

<p>How can I calculate or know how many instances I need?
And how do you calculate the hours for instance? 
Is possible set it scalable?</p>