# UCP Tech Council Expansion: Recent Updates and Full Architecture Breakdown

> Amazon, Meta, Microsoft, Salesforce, and Stripe joined the UCP Tech Council on 24 April 2026. Full architecture breakdown of the Universal Commerce Protocol: the six capabilities, the /.well-known/ucp manifest, the Trust Triangle, the partner roster, the timeline, and how UCP relates to A2A, AP2, MCP, and ACP.

**Published:** 2026-04-26
**Category:** Technical
**URL:** https://www.tryrankly.com/blogs/ucp-tech-council-expansion-recent

## In this article

1. What is UCP
2. Official Resources
3. Who Developed It
4. Partners
5. Who It's For
6. UCP vs A2A, AP2, MCP
7. Architecture
8. Discovery Manifest
9. The Six Capabilities
10. The Trust Triangle
11. Transports
12. Code and SDKs
13. Timeline
14. UCP vs ACP
15. Outlook

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Read the full article with all source citations, illustrations, and analysis at [https://www.tryrankly.com/blogs/ucp-tech-council-expansion-recent](https://www.tryrankly.com/blogs/ucp-tech-council-expansion-recent).

**Keywords:** Universal Commerce Protocol, UCP, agentic commerce, Google, Shopify, AP2, A2A, MCP, ECP, ACP, Agentic Commerce Protocol, Stripe, OpenAI, Trust Triangle, UCP Tech Council, AI shopping protocol