The most common cloud-based integration service model is iPaaS (Integration Platform as a Service), which is a suite of cloud services enabling customers to develop, execute and govern integration flows between disparate applications.Under the cloud-based iPaaS integration model, customers drive the development and deployment of integrations without installing or managing any hardware or middleware.
The iPaaS allows businesses to achieve integration without big investment into skills or licensed middleware software. iPaaS used to be regarded as integration tool for cloud-based software applications, used mainly by small to mid-sized business. In the meantime, however, a hybrid type of iPaaS,i.e. iPaaS that connects cloud to on-premise, is becoming increasingly popular. Additionally, large enterprises explore ways of integrating iPaaS into the existing IT estate.