How does Enterprise Architecture relate to Agile and DevOps?

EA and Agile should complement each other.

Agile focuses on delivering value incrementally and responding to changing requirements. DevOps focuses on integrating development and operations to improve delivery and reliability.

EA provides longer-term direction and enterprise-level guardrails.

The key is to avoid turning architecture into a large approval process that prevents teams from moving quickly.

Instead, architects should establish clear principles, reusable patterns and technology standards so delivery teams can make many decisions independently.

Good architecture should therefore enable speed rather than prevent it.