Low Cost
Public cloud has a lower cost than private, or hybrid cloud, as it shares the same resources with a large number of consumers.
Public Cloud
Public cloud is an IT model where on-demand computing services and infrastructure are managed by a third-party provider and shared with multiple organizations using the public Internet. Public cloud service providers may offer cloud-based services such as infrastructure as a service (IaaS), platform as a service (PaaS), or software as a service (Saas) to users for either a monthly or pay-per-use fee, eliminating the need for users to host these services on site in their own data center.
Cloud service providers use groups of data centers that are partitioned into virtual machines and shared by tenants. Tenants may simply rent the use of those virtual machines, or they may pay for additional cloud-based services such as software applications, application development tools, or storage. Companies often use public cloud services for less-sensitive applications that have unpredictable spikes in usage or for storing data that does not require frequent access.
Advantages of Public Cloud
Location Independent
Public cloud is location independent because its services are offered through the internet.
Save Time
In Public cloud, the cloud service provider is responsible for the manage and maintain data centers in which data is stored, so the cloud user can save their time to establish connectivity, deploying new products, release product updates, configure, and assemble servers.
Quickly and easily set up
Organizations can easily buy public cloud on the internet and deployed and configured it remotely through the cloud service provider within a few hours.
Business Agility
Public cloud provides an ability to elastically re-size computer resources based on the organization's requirements.
Scalability and reliability
Public cloud offers scalable (easy to add and remove) and reliable (24*7 available) services to the users at an affordable cost.