freeCodeCamp

How to Deploy a Serverless Spam Classifier Using Scikit-Learn, AWS Lambda, & API Gateway

Rakshath Naik |
In today's digital world, spam is no longer just an annoyance - it's a growing security threat. To combat this, developers often turn to machine learning to build intelligent filters that can distingu... read more

How to Dockerize a Go Application – Full Step-by-Step Walkthrough

Njong Emy |
Imagine that you want to share your source code with someone who doesn’t have Go installed on their computer. Unfortunately, this person won’t be able to run your application. Even if they do have Go... read more

Learn Hardware, Cloud, DevOps, Networking, Security, Databases, DNS, Git, and Linux

Beau Carnes |
Ready to dive into IT but don’t know where to start? freeCodeCamp just dropped the Ultimate IT Fundamentals Bootcamp For Absolute Beginners course. This is a a brand new, full-length course created by... read more

Inside TreeHacks 2026, Stanford’s Elite Student Hakc

Beau Carnes |
Are you ready to be inspired by the next generation of tech innovators? freeCodeCamp.org just dropped a new documentary on our YouTube channel that dives deep into Stanford’s TreeHacks 2026, one of th... read more

How to Measure Your AI Citation Rate Across ChatGPT, Perplexity, and Claude

Chudi Nnorukam |
Most sites think they're getting AI citations because their brand shows up in ChatGPT answers, but they're not. Visibility and citation are different numbers, and the gap between them is where the lea... read more

How to Deploy a Full-Stack Next.js App on Cloudflare Workers with GitHub Actions CI/CD

Md Tarikul Islam |
I typically build my projects using Next.js 14 (App Router) and Supabase for authentication along with Postgres. The default deployment choice for a Next.js app is usually Vercel, and for good reason:... read more

How to Build a Multi-Tenant SaaS Platform with Next.js, Express, and Prisma

Michael Okolo |
Have you ever wondered how platforms like Webflow, Notion, or Hashnode serve thousands of users from a single codebase — each with their own unique URL? The answer is multi-tenancy: an architecture wh... read more

How I Completed 15 freeCodeCamp Certifications in 4 Months: A Structured Learning Journey

Mohammed Fahd Abrah |
Can you achieve a massive milestone while you're still in high school other than just getting high grades? You may be thinking: school alone is plenty of work! And it often is. But if you set your min... read more

How to Build an Agentic Terminal Workflow with GitHub Copilot CLI and MCP Servers

Caleb Mintoumba |
Most developers live in their terminal. You run commands, debug pipelines, manage infrastructure, and navigate codebases, all from a shell prompt. But despite how central the terminal is to developer... read more

How AI Changed the Economics of Writing Clean Code

Aaron Yong |
If you've ever wanted to add an interface to a codebase and gotten pushback, you already know the argument: "That's twice the code for the same thing." And honestly? It was a fair point. You'd write t... read more