Multi-Store eCommerce: 4 Stores - 1 Checkout | Get Elastic

GAP + Banana Republic + Old Navy + Piperlime = 1 Checkout

Closing the gap between its e-stores, Gap now allows customer to shop all of its stores online as though it were one site. Customers can switch shops just by clicking tabs, add products to a single cart and check-out in one go.

(From Get Elastic Blog)

Multi-Store eCommerce: 4 Stores - 1 Checkout | Get Elastic