MSI in Magento: when to simplify and when not to

MSI is powerful, but heavy.

Use it if:
- You have multiple warehouses.
- You need split shipments.

Avoid it if:
- Single warehouse.
- Small catalog.

In simple stores, MSI adds overhead and extra queries.
For simple operations, single‑source stock is healthier.

If you already use MSI and don’t need it, simplifying reduces joins and improves TTFB.
The real cost of MSI is operational complexity, not just performance.