---
title: Observability
description: Monitor and analyze performance with Speed Insights, Web Analytics, Logs, and more.
url: "https://vercel.com/kb/observability"
published: 2025-11-03
last_updated: 2026-07-29
install_vercel_plugin: npx plugins add vercel/vercel-plugin
---

# Observability

Monitor and analyze performance with Speed Insights, Web Analytics, Logs, and more.

## All Observability guides

- [Capture AI SDK token usage, tool calls, and cost with evlog](/kb/guide/ai-sdk-and-evlog): Record AI SDK usage with evlog, add cost estimates and request context, and investigate expensive or failed requests.
- [How to prepare your storefront for Black Friday traffic](/kb/guide/black-friday-preparation): A practical checklist for keeping your storefront fast and your checkout path healthy through Black Friday and Cyber Monday traffic, from load testing to instant rollback.
- [Troubleshoot and optimize Active CPU usage on Fluid compute](/kb/guide/optimize-active-cpu-on-fluid-compute): Diagnose which routes drive Active CPU usage and learn to optimize it. Separate traffic growth from per-request CPU work, fix common Active CPU usage patterns, and verify the change after shipping.
- [Build Imgur-style image hosting with Nuxt and Vercel Blob](/kb/guide/vercel-blob-nuxt-imgur-clone): Learn how to build an Imgur-style paste-to-share image host using Nuxt and Vercel Blob, with direct-to-storage client uploads, shareable ISR preview pages, and CDN caching at every layer.
- [Add structured application logs to Vercel Functions](/kb/guide/add-structured-application-logs-to-vercel-functions): Learn how to add structured application logs to Vercel Functions to help troubleshoot function issues in real time.
- [How to use Vercel’s Bot Management features](/kb/guide/how-to-utilize-vercels-bot-management-features): A practical, step-by-step guide to identifying unwanted automated traffic and securing your Vercel apps with Bot Protection Managed Rules, AI Bots Managed Rules, BotID, and custom WAF rules. Learn how to enable, monitor, and tune protections to block bad bots, preserve performance for real users, and safely allow good crawlers.
- [Why site performance matters](/kb/guide/why-site-performance-matters): How site speed, Core Web Vitals, and SEO combine to drive user retention, conversion rates, and revenue growth.

## Explore other topics in the Vercel Knowledge Base

- [Security](/kb/security): Block bots and abusive traffic, rate limit your APIs, protect deployments, and support PCI DSS, HIPAA, and SOC 2 compliance with the Vercel Firewall and BotID.
- [Agent Stack](/kb/agent-stack): Connect agents to any model, run multi-step work in durable workflows and isolated sandboxes, and give them scoped access to your data, tools, and chat apps.
- [Docker](/kb/docker): Deploy HTTP applications from a standard Dockerfile with Vercel Functions, and run continuous background workers with Vercel Daemons. Find deployment and migration guides for both.
- [Migrations](/kb/migrations): Learn how to migrate your application or agent to Vercel's agentic infrastructure.

## Reference Architecture

Choose a stack and work through the decisions behind it, with curated documentation, guides, templates, and courses to help you build.

- [Agent stack](/kb/architecture/agents): Build and operate agents with models, tools, and durable workflows.
- [Web applications](/kb/architecture/web): Choose rendering, data, authentication, and caching approaches.
- [Backends](/kb/architecture/backends): Choose a runtime, connect services, and run background work.

[Browse all stacks](/kb/architecture)