n8n is a workflow automation tool. You build a flow by connecting blocks on a canvas: a trigger starts it, and each step after that does one thing, fetch data, transform it, send it somewhere. When the trigger fires, the whole chain runs on its own.
Think of it as a set of dominoes you arrange once. A new lead lands in your contact form, and n8n knocks the rest over: it adds the person to your CRM, emails the sales team, and logs the deal in a spreadsheet, all in a few seconds, every time, without anyone touching it.
What sets n8n apart is that it’s open-source and can run on your own server. Your data never has to leave your infrastructure, which matters for GDPR and sensitive records. Most steps are visual, but when you need something specific you can drop in code or call any API directly. A trigger can also be a webhook, so another system pings n8n the instant something happens rather than n8n polling on a timer.
It pays to know where it stops being the right tool. n8n shines at gluing services together and moving data between them. For heavy custom logic, dozens of branching conditions, or screen-scraping a legacy app with no API, you are often better off with proper code or dedicated RPA. And a workflow with no error handling will fail silently, so always add a path for the step that goes wrong and a way to retry it.
At TopDevs we use n8n to wire up the connections between a client’s tools, quietly handling the repetitive work that would otherwise eat hours every week.
