Introduction to Go · Lesson 3 of 9

Where Is Go Used?

A free lesson from Swipe Coding · Go, level 1 · updated October 2026

By the Swipe team, founded by Colin · how we make lessons

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Go quietly powers a huge amount of the infrastructure the internet runs on. 🐹

Go shows up in more places than most people expect, especially behind the scenes of the modern internet. Here are the areas where it's used the most.

☁️ Cloud infrastructure & DevOps: Two of the most important pieces of software in modern cloud computing — Docker and Kubernetes — are both written in Go. If you've ever heard of a company "containerizing" its applications or running them "in the cloud," there's a very good chance Go is working behind the scenes.

Quick check

Which widely-used infrastructure tools are written in Go?

🌐 Backend web services & APIs: Companies like Uber, Twitch, and Cloudflare use Go to build fast, reliable backend services — the server-side code that handles requests, data, and business logic behind an app or website, often at an enormous scale.

Fill in the blank

Go is especially popular for building fast, scalable ____ that handle requests and data behind an app or website.

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This is the reason so many developer tools quietly turn out to be written in Go. 🛠️

⚡ Command-line tools: Because go build produces a single, self-contained executable with no separate runtime to install, Go is a favorite choice for command-line tools that need to be simple to download, share, and run on any machine.

True or false

Go is mainly used for small hobby scripts and has little presence in professional infrastructure or backend systems.

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