Amazon’s pop-up stores keep popping up in malls across the U.S.

The tech giant now has 29 “pop-up” kiosks in 15 states, which is up from 21 stores in September.

The kiosks have a full complement of Amazon devices from the Alexa-powered Echo speaker, to Dash buttons, to various Kindle models.

The Street reported on Monday about the kiosk in Freehold, N.J., that recently opened nearby Amazon and Microsoft’s retail stores. There are two stores in the Seattle area: at Alderwood Mall in Lynnwood and Westfield Southcenter in Tukwila.

Business Insider reported in September that there could be as many as 100 kiosks set up by this year. That’s up from just six kiosks at the end of 2015, Business Insider noted.

The pop-up stores are separate from Amazon’s physical bookstores — its first opened in Seattle more than a year ago, and four others have debuted since, with another five launching in the future. Amazon also uses the bookstores to sell its devices, in addition to books.

This is all part of Amazon’s increased focus on opening brick-and-mortar retail locations. A New York Times report from the weekend noted how the company is also thinking about new retail outlets in categories including furniture, home appliances and electronics.

Meanwhile, the Wall Street Journal reports that Amazon is delaying the public launch of the first high-tech Amazon Go convenience store, which has been in private testing in downtown Seattle.

Amazon is also preparing to open its first AmazonFresh Pickup locations in Seattle’s Ballard and SoDo neighborhoods.

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