Amazon is removing “free speech” social network Parler from its web hosting service for violating rules.
If Parler fails to find a new web hosting service by Sunday evening, the entire network will go offline.
Parler styles itself as an “unbiased” social media and has proved popular with people banned from Twitter.
Amazon told Parler it had found 98 posts on the site that encouraged violence. Apple and Google have removed the app from their stores.
Launched in 2018, Parler has proved particularly popular among supporters of US President Donald Trump and right-wing conservatives. Such groups have frequently accused Twitter and Facebook of unfairly censoring their views.
While Mr Trump himself is not a user, the platform already features several high-profile contributors following earlier bursts of growth in 2020.
Texas Senator Ted Cruz boasts 4.9 million followers on the platform, while Fox News host Sean Hannity has about seven million.
The move comes after Apple suspended Parler from its app store. The suspension will remain in place for as long as the network continued to spread posts that incite violence, it said.