Increase in data in the modern world makes it necessary for organizations to adopt cloud services. Many companies have used cloud computing services to transform their businesses. Private cloud services are relatively expensive to buy and maintain. Many organizations prefer public cloud services to private cloud services because private cloud services are cheaper to acquire and maintain. Public Cloud Providers are offered to the public through an open network and managed by the service providers. The public cloud providers operate and monitor every activity at their data center and provide access to data through the internet. The public can access resources such as applications, virtual machines, and online storage tools. Public cloud providers also offer privacy tools for managing and controlling data. Public Cloud Providers offer various models of cloud services such as software-as-a-service (SaaS), infrastructure-as-a-service (IaaS), and platform-as-a-service (PaaS). In SaaS, third-party service providers hosts and run applications, and avail them to users through the internet. In IaaS, a third party service provider offers and manage virtualized resources over the internet. PaaS allows third-party providers to offer software tools needed to develop applications. Public Cloud Providers offer cost-effective hosting services to organizations. Users don’t pay security, infrastructure or maintenance fees. Public cloud service providers have stringent security measures to keep data safe. The providers also offer cloud bursting services to users.