Abstract: Techniques for providing federated runtime composition for distributed workloads are disclosed. In an example method, a first host computing system executes program code including an operation to be executed by a federated application. The first host establishes a channel with hosts accessible via a network. The first host receives, from a second host, information identifying a source for one or more of (1) second program code to execute the first application, in which the second program code include an adapter configured to facilitate the execution of the operation locally by the first application on the first host or by dispatching the operation for execution by the first application on a third host, or (2) the first application. The first host receives the adapter. The first host executes the operation by executing the adapter to cause the federated application to execute on the first host or the third host.