Use case for PaaS

Question:
Which of these scenarios are good use cases for PaaS?

1. IoT deployment
2. Organizations who want the maintenance of their applications to be done by the service provider
3. Organizations who want to manage the lower-level details of the application environment
4. Organizations who want to maintain full control over the installation, configuration, and operation of their application infrastructure

Answer:
A - is the correct answer. PaaS clouds support a broad range of application environments, programming languages, and tools used for IoT deployments