Which technology uses HTTP messages to transfer data to applications on different hosts?

REST (Representational State Transfer) is an architectural style for distributed hypermedia systems. It uses standard HTTP methods (GET, POST, PUT, DELETE) to perform operations on resources, making it ideal for transferring data between applications on different hosts over the internet. This stateless approach simplifies communication and is widely used in web services and APIs. OpenStack is a suite of open-source software tools for building and managing cloud computing platforms. OpFlex is a policy-based control protocol used in Cisco ACI (Application Centric Infrastructure). OpenFlow is a protocol that enables software-defined networking (SDN) by allowing a central controller to manage network switches. These are all related to networking or cloud computing but do not primarily describe the use of HTTP messages for data transfer between applications in the way REST does.