What is an organization exclusively responsible for when they access an application through a software as a service (SaaS) model?

Maintaining overall system operability is the SaaS provider's responsibility, not the customer's, because the provider manages the underlying platform and application.

In a SaaS model, the provider owns and operates the full technology stack from infrastructure up through the application layer. The organization retains responsibility only for the data it inputs and the customer-facing content it configures or publishes within the application. All other operational concerns belong to the vendor.

Monitoring data center servers is handled entirely by the cloud provider in a SaaS model, as the customer has no access to or visibility into physical infrastructure.

Monitoring computer networks is part of the provider's infrastructure management duties in SaaS, not a customer obligation.