Complete Guide to n8n: Workflow Automation for Businesses
n8n is one of the most powerful and flexible workflow automation platforms available today. Unlike competitors such as Zapier or Make, n8n is open source, can be self-hosted, and offers complete control over your data and processes. In this guide, you will discover how to start using it to automate your company's processes.
What is n8n and Why Choose It
n8n (pronounced 'nodemation') is a workflow automation tool that allows you to connect hundreds of applications and services together without writing code. Founded in 2019, it quickly gained popularity thanks to its flexible architecture, intuitive visual interface, and the ability to run it on-premise.
The main advantages of n8n over competitors are: open source model with self-hosting capability, no execution limits on paid plans, customizable code with JavaScript/Python in nodes, over 400 native integrations, and an active community continuously developing new nodes.
Installation and Setup
Option 1: n8n Cloud
The quickest way to get started is to use n8n Cloud, the hosted version managed by the n8n team. Simply sign up on n8n.io, choose a plan, and start creating workflows in minutes. Ideal for those who want to try the platform without managing infrastructure.
Option 2: Self-Hosting with Docker
For those who prefer full data control, n8n can be installed in minutes with Docker. The command docker run -it --rm --name n8n -p 5678:5678 -v ~/.n8n:/home/node/.n8n n8nio/n8n starts a local instance accessible at localhost:5678. For production environments, it is advisable to configure a PostgreSQL database and a reverse proxy.
Core Concepts of n8n
Nodes
Nodes are the fundamental building blocks of every n8n workflow. Each node represents an action or data source: an HTTP Request node can call any REST API, a Gmail node sends or receives emails, a PostgreSQL node runs database queries. Nodes are connected to each other, passing data in JSON format.
Triggers and Workflows
Every workflow starts with a trigger: an event that initiates execution. The most common triggers are webhooks (activated by external HTTP requests), schedules (run at predefined times), and application-specific triggers such as 'new message in Slack' or 'new lead in HubSpot'.
Your First Workflow: Slack Notification for New Leads
A classic starter workflow is: when a new lead arrives in a web form (Webhook trigger), save it to a Google Sheets spreadsheet (Google Sheets node), and send a notification to the sales team's Slack channel (Slack node). This simple workflow eliminates manual data entry and ensures the team never misses a lead.
Advanced Features
Once you have mastered the basics, n8n offers advanced features such as: the Code node to execute custom JavaScript or Python, the IF node to create conditional logic, the Loop node to iterate over data lists, and sub-workflows to organize complex automations into reusable components.
Conclusion
n8n is an extraordinarily powerful tool for automating business processes. The initial learning curve is repaid by a flexibility and scalability that few other platforms can offer. At 42bites, we use n8n daily to build complex automations for our clients, from lead management to integrating ERP systems with generative AI tools.