Cloud computing is a model for enabling ubiquitous, convenient, on-demand network access to a shared pool of configurable computing resources (e.g., networks, servers, storage, applications, and services). This means that you can access your files and applications from any device with an internet connection.

Cloud computing has many benefits, including the following:

• Reduced Costs: You only pay for what you use and you can scale up or down as needed.
• Increased Agility: You can deploy new applications and services quickly and easily.
• Enhanced Security: Cloud providers have security measures in place to protect your data.
• Improved Reliability: Cloud providers have redundancies in place to provide reliable service.
• Increased Scalability: When on cloud you can scale your infrastructure quickly as your business grows.

There are four main cloud deployment types: private, public, hybrid, and multicloud.

• Private cloud: A private cloud is a single-tenant environment that is dedicated to your organization, it can run on-premise (physical infrastructure) or can be hosted by a third-party service provider. This means that you have complete control over the data and applications in the cloud.
• Public cloud: A public cloud is a multitenant environment that is shared by many organizations. This means that you do not have complete control over the data and applications in the cloud.
• Hybrid cloud: A hybrid cloud is a combination of a private and public cloud. The hybrid cloud approach allows data and apps to move between the two environments.
• Multicloud: Multicloud is a combination of two or more cloud services from different providers. This means that you can use the best features of each cloud service to create a custom solution for your organization.

Cloud application development is the process of designing, creating, testing, and deploying applications that run on a cloud computing platform. This can include public clouds, private clouds, or hybrid clouds.

The three main types of cloud computing as-a-service options are infrastructure, platform, and software. Each one covers a different level of management for you:

• IaaS (Infrastructure as a Service): IaaS includes all of the infrastructure components that are needed to run your applications, such as servers, storage, and networking.
• PaaS (Platform as a Service): PaaS provides a platform for you to develop and deploy your applications. This can include tools for development, testing, and deployment.
• SaaS (Software as a Service): SaaS is a complete application that is offered to users over the internet. This means that you do not need to install or manage any software on your own.