TikTok is testing a rival to Amazon Prime as it looks to create a US e-commerce giant

Krisztian Bocsi/Rolf Vennenbernd/Getty Images TikTok is testing a membership program for shoppers called TikTok Shop Plus. Like Amazon Prime, the offering includes discounts, coupons, and free shipping on some items. Shop Plus may help the company build stronger customer loyalty and avoid losing sales to Amazon. TikTok is ripping a page from Amazon's playbook. The social-video app is testing a Prime-style membership program for some US shoppers, according to screenshots of the offering viewed…