Epsilon, a data, technology, and marketing-services company within Publicis Groupe, has described a managed UI testing service built with Amazon Nova Act and Amazon Bedrock AgentCore Browser Tool. The company says the service allows product teams to create and run browser tests using plain-English instructions without managing browser infrastructure individually.

According to AWS’s published account, Epsilon’s existing Playwright suite remains its regression-testing backbone. The new capability is intended to complement selector-based tests, which the company says can be affected by cosmetic changes to an application’s interface. Example instructions include confirming that a rewards balance is visible, handling an optional onboarding tour, scrolling until a field appears, and verifying that a newly created agent is listed.

The platform uses an API for workflow creation, a background task runner for execution, and managed browser sessions connected to Nova Act through the Chrome DevTools Protocol. Epsilon says the system records step-level results and screenshots, calculates an overall pass rate, and stores results and session information in Amazon S3. Its architecture also uses AWS services including Amazon SQS, Amazon ECS, IAM, and CloudTrail.

Epsilon exposes the capability as a standard platform agent with separate skills for recording and executing tests. The company says onboarded teams receive scoped cross-account access and use the same platform interface as other agent capabilities. AWS presents the implementation and reported results as Epsilon’s experience; the source does not independently verify the company’s performance claims.