Model Context Protocol (MCP .NET SDK) and Agent-to-Agent (A2A .NET SDK) form the foundational layer of secure, scalable, and reliable agentic AI systems. MCP enables context-driven execution across distributed agents, while A2A ensures trusted identity, encrypted communication, and autonomous coordination. Together, they unlock a new class of enterprise applications—where intelligent agents safely orchestrate workflows, share intent, and adapt in real time. And it works with Microsoft EntraID for authentication/authorization as well as Azure Foundry for LLM Model.