In a typically busy week, Amazon rolls out more Dash Buttons, food delivery, video viewing options to consumers and Prime shipping adjustments for marketplace merchants. Inc. is the No. 1 e-retailer in North America and Europe by sales, and is rapidly expanding its presence globally. It keeps its more than 180,000 part- and full-time employees busy innovating new services and improving the ones it has. This is a digest of Amazon’s latest moves for the week ending Sept. 4.

Now Amazon is testing with those merchants a program called Ship By Region, which lets sellers refine which products Amazon shows as eligible for Prime based on where the Prime member is. Since it costs more to ship long distances, these marketplace sellers can designate where they are willing to offer the product for Prime shipping. A merchant in California selling TVs, for example, may only flag its TVs for Prime shipping eligibility along the West Coast. A Prime member on the East Coast would not see that item flagged by that seller as Prime-eligible. Merchants selling on Amazon’s marketplace accounted for 45% of units sold in the second quarter. is No. 1 in the 2015 Internet Retailer Top 500.