Final answer:
When a company obtains a subscription to utilize a service provider's infrastructure, programming tools, and programming languages for developing and serving cloud-based applications, this represents the PaaS service model in cloud computing.
Step-by-step explanation:
When a company obtains a subscription to utilize a service provider's infrastructure, programming tools, and programming languages for developing and serving cloud-based applications, this represents the Platform as a Service (PaaS) service model in cloud computing.