How can developers use Custom Actions and Custom APIs to encapsulate reusable business operations in Dataverse?

Explore how Custom Actions and Custom APIs can encapsulate complex business operations in Microsoft Dataverse and expose them as reusable operations across applications and integrations. Understand when to choose Custom APIs over legacy Custom Actions, and how parameters, messages, plug-ins, security, and execution pipelines fit together. Discuss how this approach can improve maintainability, consistency, and reusability in enterprise Power Platform and Dynamics 365 solutions.