AWS Architecture Blog
Author: Anand Komandooru
Anand is a Principal Solutions Architect on the Well-Architected Solutions Innovation team at AWS, with over 20 years of experience building software and helping customers design and deliver cloud-native and AI applications. Outside of work, he writes about AI architecture patterns on AWS Builder Center and enjoys time with family, music, cooking, and nature.
MCP went stateless: Is your AWS MCP server deployment well-architected?
On July 28, 2026, MCP made its protocol core stateless, removing the initialize handshake and session header. This post maps the MCP 2026-07-28 specification to the AWS Well-Architected Agentic AI Lens, pillar by pillar, and shows why the stateless design lets you delete the sticky sessions and session stores your MCP servers needed on AWS.