The public cloud meets the criteria given as it is hosted offsite by a service provider and offers scalable infrastructure and services over the internet with a pay-as-you-go billing model. Private cloud environments are generally hosted on-premises and managed internally, not typically offering pay-as-you-go pricing. Hybrid cloud combines on-premises private cloud and third-party public cloud services but is not exclusively managed over the internet by a third-party provider. Community cloud is a collaborative effort where the cloud infrastructure is shared between several organizations from a specific group with common computing concerns.