Short answer
Choose n8n when the process goes beyond Microsoft 365, needs custom logic, API integrations or hosting control. Choose Power Automate when the team's work and data already live in SharePoint, Teams, Excel and Outlook.
When should you choose n8n?
n8n gives more freedom in workflow design and works well for connecting many tools. It is a good fit when you need APIs, webhooks, databases, AI models and custom rules.
- the process uses tools outside MS365
- you need self-hosting or cost control
- the workflow has many conditions and exceptions
- AI or custom code may be added later
When should you choose Power Automate?
Power Automate has an advantage where the company already works in Microsoft 365 and wants to organize document flows, SharePoint lists, Teams notifications, forms and approvals.
- SharePoint is the main workplace
- the process is about documents, approvals or Teams
- IT wants to manage access in Microsoft 365
- the team should maintain simple flows itself
How do you decide?
Do not start with the tool. First describe the input, decisions, exceptions, sensitive data, process owner and where the output should appear. Only then can you see whether n8n, Power Automate, a custom app or a mix is the right option.