Power Platform Custom API – low code solution

Power Platform Custom API – low code solution. Presented by Adimulam Natarajan.

Agenda. 3/5/2026. Sample Footer Text. 2. What is a Custom API? Why use it in low‑code solutions? Key components Architecture overview Usage examples Best practices Q&A.

A Custom API is essentially a reusable endpoint inside Dataverse. It lets you expose server‑side logic in a controlled, secure way. This is especially useful when you need logic that goes beyond what standard connectors offer. It centralises business rules so you don’t have to duplicate logic across apps or flows. It also ensures consistency and governance, which is important in enterprise environments..

Custom APIs shine when you need to enforce business logic that must run server‑side. They’re ideal when multiple apps or flows need the same logic, because you can maintain it in one place. They’re also useful when integrating with external systems or when performance and security are priorities. Essentially, if you find yourself repeating logic or hitting limitations with connectors, a Custom API is a strong candidate..

Every Custom API has a few core building blocks. Request parameters define what inputs the API expects. Response properties define what it returns. The logic itself is usually implemented in a plugin or custom code. Security roles determine who can call the API, which is crucial for governance. And finally, packaging everything inside a solution ensures it can be deployed cleanly across environments..

This diagram shows how Custom APIs fit into the broader Power Platform ecosystem. Apps and flows call the API, which sits inside Dataverse. The API then triggers server‑side logic—this could be a plugin, a custom service, or even an external API. This architecture keeps the client side lightweight and ensures that logic runs consistently and securely..

There are several practical ways to use Custom APIs in low‑code scenarios. In Power Automate, they can act as reusable actions that simplify complex flows. In Canvas Apps, they can replace multiple formulas with a single call. In Model‑Driven Apps, they can power command bar actions. And when integrating with external systems, they provide a single, secure entry point for your logic..

Best practices. A few guidelines help keep Custom APIs maintainable. Keep them focused—each API should do one thing well. Use clear naming so others can understand their purpose. Document the request and response structure so they’re easy to consume. Apply proper security roles to control access. And version your APIs so changes don’t break existing apps or flows. Testing across both Power Apps and Power Automate ensures everything behaves as expected..

Q & A. Use this portion of your presentation to answer audience questions..