title: Using SaaS along with PaaS
body: <p>I've read some information on the SaaS/PaaS/IaaS and I'm thinking of this:</p>
  
  <p>if I offered a SaaS application, could my customer develop and deploy his own application using PaaS which would interact with my SaaS-application using some API?
  Or am I getting the idea of cloud services wrong?</p>