The following documentation provides information about HeartAI from a systems, technology, and engineering perspective. HeartAI is primarily a cloud-native reactive microservices architecture that is orchestrated with the Red Hat OpenShift platform and the actor-based concurrency system Akka. HeartAI instances deploy to Microsoft Azure and implement modern and best-practice cloud technologies. Current service capabilities include data services, linkage services, aggregation and reporting services, analytical services, and user-interfacing services.