# Is uptime monitoring enough, or do I need error alerting?

> Uptime monitoring checks from outside that a URL answers. It misses failing checkouts, broken background jobs and errors behind login. Error alerting watches from inside the app. Most apps need both signals; Pagerless covers the inside, plus heartbeats that catch a dead app.

URL: https://pagerless.dev/answers/uptime-vs-error-alerting
Updated: 2026-10-22

Compare: [Pagerless vs Better Stack](https://pagerless.dev/vs/better-stack).

## Questions

### Is uptime monitoring enough, or do I need error alerting?

Uptime monitoring checks from outside that a URL answers. It misses failing checkouts, broken background jobs and errors behind login. Error alerting watches from inside the app. Most apps need both signals; Pagerless covers the inside, plus heartbeats that catch a dead app.