Operational drift describes how different a system is between the operational spec and what you see over time. And in this article, @hugo_teijiz teaches you how to model it. You'll establish a conformance baseline, reevaluate over time, determine what's meaningful divergence, and much more. freecodecamp.org/news/detect…

Calculus is a powerful tool for understanding change, motion, and growth. And it's good to know as a dev. In this new College Calculus course, Ed teaches you the key concepts through the lens of Python. You'll learn about limits, derivative rules, slope interpretation, and how to apply symbolic math libraries like SymPy for graphing & computation. freecodecamp.org/news/learn-…

For today's coding challenge, you'll build a handy little tip calculator. Check it out on the freeCodeCamp mobile app.

Building a website from scratch might feel overwhelming at first. That's why @Kunal_N25 wrote this tutorial - to walk you through the process step by step. You'll start by coming up with an idea & setting up the project, then move on to building the website, testing the code, & pushing it to GitHub. freecodecamp.org/news/how-to…

AI apps get way more powerful when multiple agents can collaborate and specialize. Especially when you understand agent design and inter-agent communication. Here, Balajee goes over how to build a multi-agent AI system in Python, containerize it with Docker, and deploy it in a scalable environment. freecodecamp.org/news/build-…

If you're getting into DevOps, you might think it sounds expensive. Lots of paid tools, right? Well, not necessarily. Here, Emidowojo helps you build a production-ready DevOps pipeline with free tools like GitHub Actions, Terraform, Docker, and more. freecodecamp.org/news/how-to…

If you want to learn how to build & deploy ML models, this course is for you. It covers Exploratory Data Analysis, Feature Engineering, Model Validation, & MLOps integration. By the end you'll be able to manage complex data projects & deploy your models. freecodecamp.org/news/end-to…

TypeScript is a powerful, statically-typed superset of JavaScript that helps you write safer and more maintainable code. And this course teaches you all the fundamentals so you can start using it in your projects. You'll learn about built-in types, type annotation, arrow functions, union, literal, and nullable types, enums, interfaces, and lots more. freecodecamp.org/news/learn-…

React is a popular front-end JavaScript framework for building interactive user interfaces. And in this beginner-friendly handbook, @oluwatobiss teaches you all the basics. You'll learn about JSX, components, hooks, rendering, and lots more through many code examples and walkthroughs. freecodecamp.org/news/react-…

For today's coding challenge, you'll get a string of a valid HTML element. Your task will be to return the attributes of the elements using certain criteria. See if you can solve it on the freeCodeCamp mobile app.

Behind the scenes, popular applications can process millions of transactions a day. And these apps scale through architecture using load balancing, service boundaries, database replication, caching, and so on. In this article, @manishmshiva explains the patterns large platforms use to keep transactions fast, accurate, and reliable. freecodecamp.org/news/how-la…

AI agents combine LLMs with tools, memory, and workflows so they can fetch data, call APIs, and take actions. And in this tutorial, Manoj teaches you how to build your own AI agent using LangGraph. You'll learn about the tools, agent state, and the agent graph - and how to wire it all together. freecodecamp.org/news/how-to…

If you're a developer, it's helpful to understand at least the basics of computer networking. And this in-depth course will teach you key networking concepts you need to know. It covers topology and architecture, IPv4 addressing, subnetting, error control, routing, DNS, and lots more. freecodecamp.org/news/comput…

If you're using containers for your projects, chances are you're using Docker. But depending on your use case and requirements, other options may be worth exploring. In this guide, @caesar_sage walks you through three container runtimes - Docker, Podman, and Containerd - to help you choose the best fit. freecodecamp.org/news/how-to…

System design interviews test more than whether you know individual technologies. In this course, you’ll learn a five-step framework for designing scalable systems and working through vague requirements. You’ll apply it to systems like Spotify, Booking.com, and WhatsApp while going over architectural trade-offs. freecodecamp.org/news/learn-…

Training and running modern AI models depends on more than GPUs alone. In this course, you’ll learn how AI data centers handle power, cooling, networking, and the physical infra behind huge GPU clusters. You’ll also see how these facilities are built, operated, and financed at scale. freecodecamp.org/news/the-an…

Well here's something relatable for today's coding challenge: figuring out how many pairs of socks you have, and how many single socks are missing their pair. Check it out on the freeCodeCamp mobile app.

A seemingly good final answer doesn’t prove that an AI agent actually completed a workflow correctly. In this book, Vasuki shows you how to build a reliability harness that tests tool use, guardrails, loops, and business outcomes. You’ll learn how to verify authoritative state, inject failures, measure reliability, and use release gates, too. freecodecamp.org/news/agenti…

Cloud migrations are easier to manage when you shift traffic gradually and verify each step. In this book, @irvingpictures walks you through moving a React and Express app from AWS EC2 to GKE while keeping PostgreSQL on AWS. You’ll use Terraform, Kubernetes, CI/CD, load testing, staged traffic shifts, and rollback checks to complete the migration safely. freecodecamp.org/news/how-to…

Shared staging environments can get messy when multiple PRs compete for the same space. In this article, @amiynarh shows you how to give each one its own isolated preview environment on GKE using GitHub Actions. You’ll add per-PR namespaces, automatic TLS, wildcard DNS, keyless auth, a shared Ingress setup, and more. freecodecamp.org/news/build-…