Shopify Flow has evolved into a powerful automation engine, especially for Plus merchants and B2B manufacturers. With multi-branching, advanced conditions, HTTP requests, Send Admin API Requests, Run Code parsing, and native Shopify triggers, Flow covers a huge range of operational workflows without needing external tools.

But for complex cross-system logic, deep data transformations, or manufacturing-grade orchestration, n8n is still the more appropriate powerhouse.

Below is a refined breakdown of when to choose which.

When Shopify Flow Is the Better Choice

1. Your automation stays inside Shopify

Flow is great when your logic revolves around:

  • Orders
  • Customers & B2B companies
  • Inventory & variants
  • Pricing and tagging
  • Approvals and internal admin steps
  • Product updates or merchandising logic

Flow can automate all of these with zero external operations.

2. You need branching, but not multi-system orchestration

Flow’s multi-branching logic now handles:

  • Multiple “if/else” paths
  • Nested checks
  • Conditional updates
  • Scheduled workflows
  • Event-driven triggers across Shopify

Perfect for Shopify-centric business rules without requiring an external logic engine.

3. You want to use Shopify-native API actions

Flow now supports two powerful integration methods:

Send HTTP Request (Grow, Advanced, Plus)

Good for pushing Shopify events to:

  • 3PLs
  • Notification services (e.g., SendGrid)
  • Airtable
  • Simple external endpoints

Real-world HTTP request templates include:

  • Notify fulfillment providers when orders are tagged “Warehouse”
  • Send new orders to Airtable
  • Sync all or unsynced products to Airtable every 10 minutes
  • Update products in batches from Airtable
  • Notify customers of expiring gift cards via SendGrid
  • Send transactional emails for custom items via SendGrid

These are great examples of “lightweight external integrations” where Flow excels.

4. You need direct Shopify API updates using Send Admin API Request

This action allows Flow to directly mutate Shopify data, no custom app required.

These templates demonstrate powerful internal Shopify automations:

✔ Add a free (100% discounted) item to new orders

Checks if the item is in stock, applies a 100% discount, and updates the order without notifying the customer.

Useful for:

  • Surprise-and-delight gifts
  • Free sample promotions
  • Automated product testing campaigns

✔ Allow ordering for companies created by B2B account requests

Automatically assigns ordering permissions when a new company is approved.

Perfect for:

  • B2B onboarding
  • Reducing manual admin
  • Ensuring new accounts get immediate access

✔ Change product template based on variant inventory

Automatically switches product templates:

  • Default template (in stock)
  • Out-of-stock template
  • Partial-stock template

Useful for:

  • Redirecting customers to waitlists
  • Highlighting made-to-order workflows
  • Increasing conversion during low-stock periods

✔ Fulfill digital items automatically

Marks digital or non-physical items as fulfilled.

Useful for:

  • Downloadable files
  • Warranty cards
  • Licenses or activation codes

These use cases show where Flow replaces custom backend apps entirely.

Summary: When Flow Is Enough

Flow is often the right tool when:

  • The automation concerns Shopify events
  • Logic is moderately complex but not multi-step across systems
  • Data stays in Shopify
  • You want API capabilities without infrastructure
  • You’re a Plus merchant using B2B features
  • You need conditional approvals, tagging, updates, or customer/company logic
  • You want easy wins without architecture overhead

When n8n Is the Better Choice

Despite Flow being powerful, manufacturers and distributors often need more than Shopify-only automation.

Use n8n when workflows cross multiple systems

Examples:

  • ERP (NetSuite, Acumatica, Business Central)
  • PIM/DAM (Salsify, Pimcore)
  • CRM (HubSpot, Salesforce)
  • WMS or 3PL APIs
  • Custom internal pricing engines

Flow can send one request.

n8n can manage entire data pipelines.

Use n8n when logic becomes engineering-grade

n8n handles:

  • Complex nested logic
  • Multi-step workflows
  • Error retries
  • Waiting for async events
  • Human-in-the-loop approvals
  • Branching into many conditions
  • Data transformations across multiple payloads

Flow = Shopify logic.

n8n = full business logic engine.

Use n8n when you need long-running workflows

Production operations often require:

  • Multi-day approval
  • Scheduled batch processes
  • Polling external systems
  • Waiting for ERP syncs
  • Multi-step production or quoting pipelines

Flow cannot wait beyond 24 hours or orchestrate long processes.

n8n is built for it.

Use n8n when doing data-heavy or geometry-heavy automations

For example:

  • Transforming product data from ERP before pushing to Shopify
  • Calculating pricing based on CAD/geometry (volume, surface area)
  • Slicer or machine-level data workflows
  • Multi-row loops (hundreds or thousands of items)

Flow cannot handle advanced data parsing.