Aug 2026

The Three Layers of Modern Software: UI, API/MCP, and Agents

Why SaaS is expanding beyond the user interface into an API/MCP layer and an agent layer—and how Gartner, Forrester, and the Linux Foundation’s MCP standard now point in the same direction.

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Three-layer SaaS architecture across user interfaces, APIs, MCP, and agents

Three-Layer SaaS

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