What differentiates paas from saas?

Question: What differentiates paas from saas?

There are many differences between a pass and a mother-in-law. As 1 pass provides single user access, whereas SaaS can enable multiple user access to more than a single use user. 2Pass has less scalability, while SaaS has more scalability. 3PaaS provides the infrastructure for cloud computing, while SaaS continues to deliver software for cloud computing.