# AWS shows synthetic monitoring with Nova Act and AgentCore

Digest AI · Agents & Tools · published 2026-09-28T15:56:32Z

Canonical: https://digestai.news/story/aws-shows-synthetic-monitoring-with-nova-act-and-agentcore

## Summary

AWS published a tutorial on building synthetic monitoring using Amazon Nova Act and Amazon Bedrock AgentCore. The approach replaces traditional selector-based browser scripts with natural-language actions driven by Nova Act's multimodal model, which processes UI screenshots instead of DOM locators. AWS says early enterprise customers have seen over 90% accuracy on browser workflows with Nova Act.

The architecture uses EventBridge Scheduler to trigger runs every 5 minutes to hourly, AgentCore Runtime for serverless execution with session isolation, the AgentCore Browser tool for remote browser sessions, and SNS for failure alerts. A sample repository provides a complete implementation for a six-step ecommerce journey that typically completes in 2 to 4 minutes. AWS includes a deploy.py script and a CDK stack for production deployment with dead-letter queues and CloudWatch alarms.

Cost estimates for the sample six-step journey running every 5 minutes (about 8,640 invocations per month) cover AgentCore Runtime invocations, Browser tool sessions, Nova Act inference, EventBridge Scheduler calls, and SNS notifications. AWS recommends focusing on 3-5 critical workflows to avoid alert fatigue and using ephemeral browser sessions for test independence.

## Key points

- Nova Act uses vision-language model on screenshots, not DOM selectors, for resilience
- Architecture combines EventBridge Scheduler, AgentCore Runtime, Browser tool, and SNS
- Sample ecommerce journey runs in 2-4 minutes; ~8,640 runs per month at 5-minute cadence

## Why it matters

Shows a managed, agent-driven alternative to brittle Selenium or Playwright scripts for synthetic monitoring, reducing maintenance and infrastructure overhead for teams validating critical user journeys.

## Sources

1. [Implementing synthetic monitoring using Amazon Nova Act](https://aws.amazon.com/blogs/machine-learning/implementing-synthetic-monitoring-using-amazon-nova-act) (AWS Machine Learning Blog, 2026-09-28, primary source)

## Cite

Digest AI, "AWS shows synthetic monitoring with Nova Act and AgentCore", 28 September 2026, https://digestai.news/story/aws-shows-synthetic-monitoring-with-nova-act-and-agentcore

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