Learn
Every term you meet when you put something online, in plain words. Each page answers in its first two sentences, then shows how the thing works, when you need it and when you don't.
New to servers: start with what a VPS isVPS → virtual machine → microVM
Building with AI: what an agent is and what it costsAI agent → MCP → agent cost
Putting a site online: what happens between a folder and an addressStatic hosting → DNS → HTTPS
Servers and where code runs
- What is a VPSA slice of a server that behaves like your own computer.
- What is a virtual machineA whole computer made of software, running on a shared server.
- What is a microVMA virtual machine stripped to the minimum, with its own kernel.
- What is a Docker containerAn app packed with its libraries, run as an isolated process that behaves the same everywhere.
- What is serverlessCode that runs only when called, billed by the run: cheap when quiet, limited when long.
- What is an AI agent sandboxAn isolated computer where an agent can run code and make mistakes safely.
AI and agents
- What is an AI agentA program that does a task for you, step by step, instead of only answering.
- What is MCPOne standard plug between AI apps and the tools they use.
- How much an AI agent costs a month, counted in tokensTokens turned into dollars for Claude and GPT, with every assumption written down.
- What is an AI gatewayOne address and one key between your code and many AI models.
- What "unlimited" means: the honest limitsWhere Uno AI is unlimited, where it is hours, and what happens when hours end.
Sites and the web
- What is static site hostingFinished files served as they are: simple, fast, hard to break.
- What is a CDNCopies of your files in many cities, so each visitor gets the nearest one.
- What is an HTTPS certificateA file that proves the site's name and turns on the lock in the browser.
- How domains and DNS workThe phone book that turns a name into a server's address.
Data
- What is S3 object storageFiles kept as objects in buckets, reached by web requests.
- What is managed PostgresA Postgres database someone else installs, updates and backs up. You get a connection string.
- What is a key-value storeA dictionary that many programs share: save by key, read by key, very fast.
Running things on their own
Network and access
Want the steps instead of the idea? Guides do one job from start to finish. Choosing between two options? Comparisons put them side by side.