title: Multi-tenant (SaaS) web app on Azure, Deployment options
body: <p>I am in the planning phase for a multi-tenant web application primarily for US customers which would most likely be hosted on Azure.  </p>
  
  <p>I am looking at the various pricing/deployment plans and was curious about the following:</p>
  
  <p>As per their website:</p>
  
  <blockquote>
    <p><em>Run up to 10 web sites per sub-region for free in a multi-tenant environment. Seamlessly upgrade to a paid shared multi-tenant or reserved instance model as your traffic grows.</em></p>
  </blockquote>
  
  <p>Does the above mean different instances of the same site or up to 10 different sites? </p>
  
  <p>Also does any one know if a single website could subscribe to multiple SQL Server instances? For example the maximum limit for database, size is 150 GB. </p>
  
  <p>My intended site, considering its growth potential might have a users base between 100-200 users in the first six months. My basic plan would give each customer at least 1GB of data storage. So assuming I exceed the 150GB limit, then I could add additional databases for the same site?</p>
  
  <p>I'm pretty new to the whole Cloud thing, so please bear with me and share your thoughts.</p>