Abstract: Technologies are disclosed for cross-service transaction facilitation and dynamic interfaces. A notification of a first transaction associated with a first user is received from a first service. Second service(s) configured to facilitate execution of the first transaction are identified and execution projections are computed with respect to the second service(s). A first interface is generated based on the identified second service(s) and the projections. First input(s) are received with respect to the first interface and a second interface is generated based on the first input(s), second service(s), and projection(s). Second input(s) are received with respect to the second interface and facilitation request(s) are initiated based on the inputs. Response(s) to the request(s) are received from the second service(s). An execution selection is generated based on the received response(s).