Cloud provides numerous services which are categorized into IaaS/PaaS/SaaS.
SaaS stands for software as a service where one does not have any control and all one can do is use the service. E.g Outlook is a SaaS service.
However, I am trying to understand this in terms of the Cloud Services. For AWS, EC2 is IaaS, Lambda Functions, Elastic Beanstack, S3 etc are PaaS. Which service of AWS is SaaS?