Question

Define each of the following in cloud computing models: Infrastructure as a service (IaaS), Platform as a service (PaaS), Software as a service (SaaS).

Option 1:
IaaS: Provides virtualized computing resources over the internet.
PaaS: Offers a platform allowing customers to develop, run, and manage applications.
SaaS: Delivers software applications over the internet on a subscription basis.

Option 2:
IaaS: Offers software applications over the internet on a subscription basis.
PaaS: Provides virtualized computing resources over the internet.
SaaS: Offers a platform allowing customers to develop, run, and manage applications.

Option 3:
IaaS: Offers a platform allowing customers to develop, run, and manage applications.
PaaS: Provides virtualized computing resources over the internet.
SaaS: Delivers software applications over the internet on a subscription basis.

Option 4:
IaaS: Provides virtualized computing resources over the internet.
PaaS: Delivers software applications over the internet on a subscription basis.
SaaS: Offers a platform allowing customers to develop, run, and manage applications.

Answer 1

Infrastructure as a Service (IaaS) is the provision of virtualized computing resources over the internet, Platform as a Service (PaaS) as a platform enabling customers to develop, run, and manage applications, and Software as a Service (SaaS) is the delivery of software applications over the internet via a subscription model.

So, option 1 is correct.

Step-by-step explanation:

Cloud computing models are differentiated based on their services. IaaS refers to the provision of virtualized computing resources, such as virtual machines, storage, and networking components, allowing users to build their own IT infrastructure without physically owning the hardware.

This enables scalability and cost-efficiency by paying for only the resources used.

PaaS offers a platform and set of tools for developers to build, deploy, and manage applications. It provides an environment that includes development tools, middleware, and operating systems, streamlining the application development process.

PaaS abstracts underlying infrastructure complexities, enabling developers to focus solely on coding and deployment.

SaaS delivers software applications over the internet, accessible through web browsers, eliminating the need for local installations. Users subscribe to SaaS applications, accessing them on-demand from anywhere with an internet connection.

This model offers convenience, regular updates, and often subscription-based pricing. Option 1 correctly aligns these definitions, ensuring clarity on the distinct roles each model plays in cloud services.

So, option 1 is correct.