Monitor app uptime and errors

Create a Sentry project for your platform (React, Node, etc). Install the SDK with npm install @sentry/react and initialize it with your DSN in your app entry point. Sentry will automatically capture unhandled errors, rejections, and console errors with full stack traces.

Add your production URL as a monitor in BetterStack Uptime. Configure checks to run every 1-3 minutes from multiple regions. Set up a status page that your users can check during incidents. BetterStack will alert you immediately if your site goes down.

Create a PagerDuty service and connect it to Sentry via the integration. Set up escalation policies so critical errors page your on-call engineer immediately while warnings create tickets for the next business day. Add the BetterStack integration so downtime alerts also route through PagerDuty.