AWS Bedrock and Google ADK Agents Communicate Across Clouds 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 Run, communicating via the A2A v1.0 protocol. The benchmark evaluates three operational modes — local MCP tool only, remote A2A delegation only, and a verified hybrid mode — to measure latency, reliability, and overhead of cross-cloud agent interaction. Both agents independently query the same Frankfurter daily exchange-rate data source to isolate protocol and model behavior from data discrepancies. The project also compares AWS Bedrock AgentCore Runtime performance directly against a prior benchmark run on Microsoft Azure's Foundry platform, providing empirical data across all three major clouds. Results show that cross-cloud agent verification is technically feasible without framework-specific integration code, though the study quantifies the latency and token costs that independent verification adds.

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