Using SaaS along with PaaS

Question

I've read some information on the SaaS/PaaS/IaaS and I'm thinking of this:

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?

Answer 1

Yes you are right PAAS provides development, testing, and deployment environment like framework , hosting space etc. So developer can develop applications quick, simple, and in cost-effective manner and Developer can also use your SAAS api to integrate your services in its product.

For example google app engine is PAAS and you GMail service is SAAS. So using google app engine you can develop and deploy your own app and in which you can give mail service by integrating GMail api.