Which service model delivers software applications over the Internet on a subscription basis?

Which service model delivers software applications over the Internet on a subscription basis?

• A. SaaS
• B. IaaS
• C. PaaS
• D. On-Premises

Answer: (A)

Delivering software over the Internet on a subscription basis is a hallmark of Software as a Service (SaaS). In this model, the provider hosts the application, takes care of maintenance, updates, and security, and you access the software through a web browser or lightweight client. You pay a recurring fee to use the software rather than purchasing a perpetual license or installing it on your own hardware. This setup eliminates the need for in-house hosting and ongoing software management. Other models focus on different layers: infrastructure as a service provides computing resources like servers and storage rather than finished software; platform as a service offers a development and runtime environment to build and deploy apps, not a ready-made software product; and On-Premises means the software runs locally on your own hardware, not accessed over the Internet as a service.

Delivering software over the Internet on a subscription basis is a hallmark of Software as a Service (SaaS). In this model, the provider hosts the application, takes care of maintenance, updates, and security, and you access the software through a web browser or lightweight client. You pay a recurring fee to use the software rather than purchasing a perpetual license or installing it on your own hardware. This setup eliminates the need for in-house hosting and ongoing software management.

Other models focus on different layers: infrastructure as a service provides computing resources like servers and storage rather than finished software; platform as a service offers a development and runtime environment to build and deploy apps, not a ready-made software product; and On-Premises means the software runs locally on your own hardware, not accessed over the Internet as a service.