SaaS (software-as-a-Service) is excellent for startups and small businesses that lack the money or resources to manage their infrastructure. You can access a SaaS application anywhere and anytime via a web browser. Application scaling is easy, and data stores in the cloud. The provider handles software updates and maintenance.
PaaS (platform-as-a-service) is a cloud computing platform that includes computing, memory, data storage, a database, and other app development services. With PaaS, there is no need for expensive hardware. PaaS providers instead supply customers with the latest software, hardware, and operating systems. Customers manage their own apps along with the data the apps need.
IaaS (infrastructure-as-a-service) enables customers to pay only for the virtual infrastructure they need. The IaaS platform provides flexibility in hosting and storing custom-built apps or standard software. IaaS is beneficial for companies with heavy application workloads that want to offload the operations and maintenance involved in managing infrastructure.
Other cloud services not used as frequently as SaaS, PaaS, and IaaS include:
FaaS (Function-as-a-service) provides a platform for developing, running, and managing applications. So developers don't have to build and maintain the infrastructure to launch their apps.
Serverless cloud enables developers to build apps without maintaining servers and infrastructure constantly. You don't have to worry about setup, capacity planning, or server management.