Abstract: Technologies for selecting a gateway for processing a request from a user system are described. Embodiments receive the request from the user system, where the request includes user profile data including a transaction request and associated user data. Embodiments identify gateways that are available to process the request. Embodiments sample historical gateway data for the available gateways using a sampling function optimized for at least two different optimization parameters. Embodiments select, by a first trained machine learning model trained based on the sampled historical gateway data, a gateway from the available gateways. Embodiments communicate the request to the selected gateway. Embodiments receive, from the selected gateway, a response that indicates a success or failure of the request.