Now that you control your own fulfillment processes and have direct ownership of shipping, you should combine the prior investments in a frontend delivery promise with the backend of shipping decisions.

In short, this is where it makes sense to tie shipping decisions with a promise given. "Promise what you can deliver, then deliver on what you promised." The latter is now possible.

That usually includes integrating pieces across your OMS, WMS, IMS, and TMS. (We jokingly call it the *MS group.)

When completed, you can now pass the customer promise at check out to the respective downstream systems to ensure an order is delivered on that date.