TikTok is planning to offer steep discounts this holiday season starting next month, according to internal documents reviewed by Bloomberg News, which also said the social media app is “hoping these bargains can attract consumers to its newly launched marketplace as it aims to compete with Amazon and Walmart.” TikTok is hosting training sessions next week for merchants selling on its marketplace and is offering to subsidize discounts of as much as 50% to entice seller participation in its Black Friday program, which begins Oct. 27 and runs through Nov. 30.