What is the cloud?

Explanation of cloud technology as a network of data centers accessible via the internet, combining various IT elements into one entity called 'cloud'.

Description of on-premises, private cloud, and multicloud implementations for IT infrastructure.

Definition and benefits of on-premises IT infrastructure, where hardware and software applications are located and operated within an organization's data center.

Benefits include no third-party access requirement, avoiding ongoing access costs, and the ability to manage hardware and infrastructure internally.

Challenges include procurement processes, physical space requirements, and the need for expert personnel to manage the infrastructure.

Explanation of private cloud hosting within an organization's private servers or through a private cloud provider, offering self-service and scalability benefits.

Description of public cloud hosting where resources are shared with multiple organizations and known as multi-tenant cloud infrastructure.

Overview of the three cloud computing service models available in public cloud: Infrastructure as a Service (IaaS), Platform as a Service (PaaS), and Software as a Service (SaaS).

Explanation of the differences between hybrid and multicloud environments, with multicloud combining at least two public cloud providers.