AgentsThe story, in brief
Article: The Agent Harness: What It Is and Two Ways to Build One
Two production harnesses, one concept: how AWS AgentCore and LangChain + Envoy handle tools, memory, cost control, and observability at scale.
The KeyNews take
Why it matters
A practitioner's guide to agent infrastructure decisions—AWS-managed vs. open-stack trade-offs in operational ownership, portability, and observability matter when deploying agents beyond proof-of-concept.
The key facts
6 to knowArticle compares AWS AgentCore Harness vs. LangChain + Envoy AI Gateway
Covers agent harness layers: development and operational
Case study: finance assistant implementations
Examined dimensions: tools, memory, model access, cost control, observability
Trade-offs: operational ownership, portability, engineering effort
Author: Trista Pan, published InfoQ Sep 25, 2026
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InfoQ AI/MLinfoq.com
Publisher excerpt: This article explains the development and operational layers of an agent harness through two implementations of a finance assistant: AWS AgentCore Harness and LangChain with Envoy AI Gateway. It compares how each handles tools, memory, model access, cost control, and observability, and examines the…