Which model of cloud computing is ideal for businesses that require minimal involvement in managing underlying infrastructure?

The ideal model of cloud computing for businesses that require minimal involvement in managing the underlying infrastructure is Software as a Service (SaaS). In this model, applications are delivered over the internet and are fully managed by the service provider. Users access the software through a web browser, meaning they do not have to handle installations, maintenance, or updates. This allows businesses to focus on using the software for their operations without getting involved in infrastructure management.

SaaS is advantageous for companies seeking efficiency and ease of use, as they can rapidly adopt applications and scale their usage according to their needs without the burden of managing physical servers or application updates. This approach is particularly beneficial for small to medium-sized businesses that may lack the resources to maintain their own infrastructure.

In contrast, the other models involve varying degrees of management responsibility. For instance, Infrastructure as a Service (IaaS) requires users to manage the underlying hardware and storage; Platform as a Service (PaaS) necessitates some level of management regarding the applications and development environment; and Functions as a Service (FaaS) involves managing serverless functions, which, while abstracting away some infrastructure management, still requires developers to consider the function's runtime environment and execution.