Atlassian: DESIGN.md trades depth for portability

Google's DESIGN.md format promises to fix generic "AI slop" UI by giving agents portable brand context in a single Markdown file. Atlassian tested it against their existing ADS MCP server and structured content model, finding that while portability helps quick adoption, it costs token efficiency and sophistication. Single files cannot encode the depth of enterprise design systems. For teams battling generic AI output, the tradeoff is clear: use DESIGN.md for fast portability, but invest in structured context engines for complex products.