Public clouds are the most common type of cloud computing deployment. The cloud resources (like servers and storage) are owned and operated by a third-party cloud service provider and delivered over the internet. With a public cloud, all hardware, software and other supporting infrastructure are owned and managed by the cloud provider. Microsoft Azure is an example of a public cloud.
In a public cloud, you share the same hardware, storage and network devices with other organisations or cloud “tenants,” and you access services and manage your account using a web browser. Public cloud deployments are frequently used to provide web-based email, online office applications, storage and testing and development environments.
Advantages of public clouds:
Lower costs —no need to purchase hardware or software and you pay only for the service you use.
No maintenance —your service provider provides the maintenance.
Near-unlimited scalability —on-demand resources are available to meet your business needs.
High reliability —a vast network of servers ensures against failure.
A private cloud consists of cloud computing resources used exclusively by one business or organisation. The private cloud can be physically located at your organisation’s on-site datacenter or it can be hosted by a third-party service provider. But in a private cloud, the services and infrastructure are always maintained on a private network and the hardware and software are dedicated solely to your organisation.
In this way, a private cloud can make it easier for an organisation to customise its resources to meet specific IT requirements. Private clouds are often used by government agencies, financial institutions, any other mid- to large-size organisations with business-critical operations seeking enhanced control over their environment.
Advantages of a private cloud:
More flexibility — your organisation can customise its cloud environment to meet specific business needs.
More control — resources are not shared with others, so higher levels of control and privacy are possible.
More scalability — private clouds often offer more scalability compared to on-premises infrastructure.
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