This is continued from part 1.
Fulfillment and 3PLs
Once all is shipped and is in the warehouse, it is the 3PL partner which becomes important.
A 3PL partner stores, picks, packs, and ships your inventory to your customers. They often have platforms that integrate directly into Shopify so you can manage it all from there.
When evaluating a partner ask:
- Their error rate per 1000 orders
- How fast do they process during peak volume? How?
- Who is the direct contact?
- How have they handled Q4 surges for other brands?
- How do they handle returns, restocks, etc?
Once again, getting on a video call is very helpful here.
Data visibility helps here as well. Inventory tracking, regular reviews, shared data — these keep small issues from compounding.
Planning
At a basic level, it comes down to three variables: how fast inventory sells, how long it takes to replenish, and how much buffer exists.
You want to look at:
- Daily sales velocity
- Lead times (from supplier to arriving at the warehouse)
- Safety stock at the warehouse
Once these are defined, you simply reorder according to: (daily sales velocity × lead time) + safety stock. When you hit this inventory level, you reorder.
Sales velocity defines movement. Lead time defines the timeline. Safety stock absorbs uncertainty.
Planning doesn't need to be complex to be effective. Weekly reviews of what inventory is moving and clear visibility into what's happening now allows one to plan accurately.
Over time, patterns become clearer. Seasonality, demand shifts, supplier reliability. The system becomes easier to manage because fewer things are unexpected.
When it works together, predictability is achieved.
These pieces — product definition, suppliers, shipping, fulfillment, planning — work together.
When the system is working, it feels steady and fewer decisions are urgent.
This is because predictability has been achieved.