This document discusses the differences between APIs (Application Programming Interfaces) and iPaaS (Integration Platform as a Service). APIs abstract complex systems and are targeted towards developers, while iPaaS focuses on putting data and events into workflows and is targeted towards business users. Both APIs and iPaaS can enable data and function exposure, self-service information systems, and platformization of IT to accelerate digital transformation. The key differences are that APIs focus on API exposure and composition through code, while iPaaS emphasizes data and event orchestration through low-code/no-code workflows.