What is Public Cloud?
A public cloud is a cloud computing model where infrastructure and services are shared across multiple organizations and made available over the internet by a third-party provider. Users pay only for the resources they consume, making it a cost-effective and scalable hosting solution.
How Does Public Cloud Work?
Public cloud providers operate massive data centers around the world and offer computing resources such as virtual machines, storage, databases, and networking on a pay-as-you-go basis. The underlying hardware is shared among many tenants, but each customer's data and workloads are logically isolated through virtualization and access controls.
The primary advantages of public cloud are its elasticity and low barrier to entry. Organizations can spin up resources in minutes without purchasing hardware, scale automatically during traffic spikes, and scale down during quiet periods to reduce costs. Major providers like AWS, Google Cloud, and Azure also offer extensive managed services that handle database administration, machine learning, and content delivery.