Building intent-driven UI testing with Amazon Nova Act

What happened

Epsilon built a managed UI testing service using Amazon Nova Act and Amazon Bedrock AgentCore Browser Tool, complementing its existing Playwright regression suite. The guide explains multi-tenant orchestration, integration code, and trajectory reuse. Epsilon’s internal benchmarks report 4-6x faster test authoring and a 100 percent pass rate when replaying saved successful trajectories, following an initial exploration phase typically requiring 4–5 prompt iterations.

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The story so far

Epsilon built a managed UI testing service using Amazon Nova Act and Amazon Bedrock AgentCore Browser Tool to complement its existing Playwright regression suite, according to an AWS Machine Learning Blog post explaining the architecture. Epsilon’s internal benchmarks reported test authoring was 4–6 times faster and saved successful test trajectories achieved a 100 percent pass rate when replayed. The initial exploration phase typically required 4–5 prompt iterations. The service uses multi-tenant orchestration and reuses successful trajectories for subsequent test runs. AWS’s guide describes the integration code and an 18-step test workflow; the reported replay results apply to saved successful trajectories.