Learn VERCEL-SERVERLESS with Real Code Examples

Next.js API route for form submission

Edge function for A/B testing user experience

Webhook handler for GitHub events

Image resizing and optimization endpoint

Serverless backend for a static website

Check function logs via Vercel dashboard

Ensure correct function paths and naming in `api/` folder

Verify runtime compatibility with function code

Check deployment status in CLI or dashboard

Ensure environment variables are configured correctly

Test functions locally using `vercel dev`

Use curl/Postman to send HTTP requests

Validate JSON responses and status codes

Monitor logs in dashboard for errors

Deploy to preview environment before production

Vercel platform (free, pro, or enterprise tiers)

Git-based automatic deployment

Manual deployment via CLI

Preview deployments for branches

Production deployment for main branch

Vercel CLI

GitHub/GitLab/Bitbucket integration

Vercel dashboard

Next.js framework integration

Built-in analytics and logs

HTTP/REST API routes

Edge functions for personalization

Webhook triggers from external services

Environment variables and secrets

Static front-end hosting with serverless API backend

Use Git integration for automatic deployments

Leverage preview deployments for QA

Monitor performance to optimize costs

Organize functions clearly in `api/` directory

Use environment variables for different stages

Cold start optimization for edge functions

Managing environment variables securely

Debugging serverless functions remotely

Adhering to execution time limits

Cost management for frequent requests