---
title: "Observability for Application Deployments"
description: "Discover practical observability techniques to pinpoint and fix slow deployments, optimize global performance, and deliver faster apps."
url: https://www.callstack.com/events/observability-for-application-deployments
updated: 2026-10-24T08:39:21.172Z
---

# Observability for Application Deployments

Discover practical observability techniques to pinpoint and fix slow deployments, optimize global performance, and deliver faster apps.

_Talk · 6/24/2025 · Recording: 29:44 · Category: Observability_

Organizer: React Universe Meetup

Speakers: Pepijn Senders (Principal Engineer @ HelloFresh)

[Watch the recording](https://www.youtube.com/watch?v=Lc8ImdwI694)

When your users complain that your app is slow, how do you pinpoint exactly what’s wrong, and how to fix it?

In this talk , Pepijn Sanders demystifies observability for application deployments. You'll explore how to precisely measure performance from end-to-end, tracing slowdowns from the user's device to backend services, and discover why latency can vary dramatically across regions, even at the speed of light.

Pepijn shares HelloFresh’s real-world experiences, explaining how they used advanced observability to reduce global latency, slash load times by 50%, and cut API timeouts by 47%. Expect deep technical insights, practical examples, and actionable strategies for implementing effective observability to diagnose, debug, and optimize your own application deployments.