Below you can see the most popular service models are Cloud models.
Infrastructure as a Service IaaS: Provides virtualized resources for computing and applications. Examples: AWS EC2, Google Compute Engine.
Platform as a Service (PaaS): This allows developers to develop, test, and deploy applications without worrying about the infrastructure. Examples: AWS Elastic Beanstalk, Heroku.
Software as a Service (SaaS): The use of software applications over the Internet, accessible through a web browser. Examples: Salesforce, Google Workspace.
These models vary according to the levels of control and complexity in using the cloud.