AWS Bedrock and Google ADK Agents Communicate Cross-Cloud in A2A Protocol Benchmark

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A developer has built and tested a cross-cloud currency conversion agent that connects an Amazon Bedrock AgentCore-hosted Strands Agents coordinator on AWS with a Google ADK agent running on Google Cloud Platform via the A2A v1.0 protocol. The experiment goes beyond basic connectivity checks, measuring latency, token overhead, and result accuracy across three evaluation modes: local MCP tool only, remote A2A delegation only, and a verified cross-check of both. Both cloud agents independently query the same Frankfurter daily exchange-rate data, ensuring any discrepancies reflect protocol or model behavior rather than data differences. Numeric agreement between agents is assessed strictly through code using relative difference calculations, avoiding any LLM-based judgment of results. The benchmark also compares AWS Bedrock AgentCore Runtime performance directly against a prior run on Microsoft Azure's Foundry platform, offering a rare empirical three-cloud comparison.

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