n8n Explained: What It Is, What It Does, and Who It's For

n8n is an open-source workflow automation tool that connects apps and APIs so they pass data and do things automatically. You can run it free on your own server, or pay for the cloud version. It’s similar to Zapier and Make, but more flexible and harder to outgrow.

TL;DR

n8n is a visual workflow automation tool (like Zapier or Make) but open-source
You can self-host it for free, or pay for n8n Cloud
Stronger than Zapier for complex logic, AI workflows, and webhooks
Best fit for businesses with technical comfort, or those working with an agency
Pricing on Cloud starts around €20/month; self-hosted = VPS cost only

What is n8n?

n8n (pronounced “n-eight-n”) is software that lets you build workflows by dragging nodes onto a canvas and connecting them. Each node is a step, a trigger, an action, a transformation. The workflow runs whenever the trigger fires.

Example: someone fills in your contact form. n8n receives the data, checks the email against your CRM, drafts a reply with Claude, sends it via Gmail, adds the lead to a spreadsheet, and posts a note to Telegram, all in a few seconds.

The product launched in 2019 as an open-source alternative to the closed-platform model of Zapier. The “fair-code” licence means you can self-host and use it commercially without paying a fee, which is the main reason it’s grown so fast among agencies and technical small businesses.

How does n8n work?

Three concepts. Once you’ve got these, the rest follows.

Nodes

Every step in a workflow is a node. n8n ships with 400+ pre-built nodes for popular services, Gmail, Google Calendar, OpenAI, Anthropic Claude, Stripe, Airtable, WhatsApp, Telegram, Buffer, and more. You can also use a generic HTTP node to talk to any API.

Triggers

A workflow starts with a trigger. Common ones:

Webhook, fires when an external service sends data to a URL
Schedule, fires on a cron schedule (every hour, every Monday, etc.)
App trigger, fires when something happens in a connected app (new email, new row in a sheet)

Data flow

Each node passes data to the next as JSON. You reference fields from earlier nodes using simple expressions. If you’ve used Zapier, the model is familiar.

Who is n8n for?

Three groups get the most out of n8n.

Solo founders and technical small business owners who want to automate without monthly per-task pricing. Self-hosted n8n on a £5/month VPS can run thousands of workflow executions for less than a Zapier Starter plan.

Agencies building workflows for clients, n8n’s flexibility, error handling, and ability to deploy the same workflow to multiple environments makes it the professional choice.

Anyone needing AI workflows, n8n’s native nodes for OpenAI, Anthropic Claude, and Google Gemini make it the strongest of the three big automation tools for AI-heavy builds.

It’s less suitable if you want a one-click setup with zero technical thinking. Zapier wins on that.

n8n vs Zapier vs Make: the headline differences

	n8n	Zapier	Make
Pricing model	Free self-hosted; flat fee on Cloud	Per-task, scales fast	Per-operation, mid-range
Complexity ceiling	High	Medium	High
AI workflows	Excellent	Good	Good
Self-hosting	Yes (free)	No	No
Learning curve	Moderate	Easy	Moderate
Best for	Technical users, agencies	Non-technical	Visual learners

Cloud n8n vs self-hosted n8n

n8n Cloud is the managed version. Sign up, build workflows, pay a flat monthly fee. No server admin. Plans start around €20/month.

Self-hosted n8n runs on your own server. The software is free; you pay only for hosting (a £5–£20/month VPS handles most small business workloads). You’re responsible for updates, backups, and uptime.

For a small business: Cloud if you want it to just work. Self-hosted if you want full control over data, or are running enough volume that Cloud pricing matters.

5 things you can build with n8n in your first week

A WhatsApp auto-responder that takes incoming customer messages, drafts replies with Claude, and sends them, with a human escalation for anything tricky
A booking-to-invoice flow that takes a booking, generates an invoice, and emails it to the client
A social media pipeline that takes a brief and generates platform-specific captions with AI, then queues them in Buffer
A lead enrichment workflow that takes form submissions, scores the lead, and routes it
A weekly summary bot that pulls data from your tools every Monday and sends a digest

Any of these are 2–8 hours of work for someone reasonably technical.

Limitations worth knowing

It’s not zero-code. You’ll write expressions, occasionally bits of JavaScript, and you’ll have to think about data structure. If that sounds painful, Zapier is gentler.

Self-hosted needs looking after. Things break, a container crashes, an API key rotates, a token expires. You need monitoring. At Darlington AI we wire a Telegram heartbeat alert to every workflow so failures are caught immediately.

Documentation can be patchy for newer features. The community forum is excellent though.

When to hire help vs DIY

DIY n8n if: you enjoy fiddling, you’ve got time, your workflows are simple-to-medium, downtime isn’t critical.

Hire an agency if: it’s revenue-critical, you’ve already wasted time trying, you need it done in days not weeks, or you want monitoring and maintenance bundled in.

FAQ

Is n8n really free? The self-hosted version is free under the “Sustainable Use” licence. You can use it commercially. The Cloud version is paid.

Do I need to know how to code to use n8n? No, but you do need to be comfortable thinking in steps and reading JSON. If you can write a half-decent Excel formula, you can use n8n.

Is n8n GDPR-compliant? Self-hosted n8n on a UK or EU server gives you full control over data location and retention. n8n Cloud has EU data residency options.

Can n8n handle high volume? Yes. We’ve seen self-hosted instances handle thousands of executions per day on modest VPS hardware.

Can I migrate from Zapier to n8n? Yes. There’s no automatic importer, but recreating workflows in n8n is usually faster than building from scratch.

Written by Kirsty, founder of Darlington AI. Last updated: 27 May 2026.