Fleets is similar to Snapchat, Facebook and Instagram's stories feature. Twitter says Fleets will be updated over time with new features and creative tools based on how people are using them.

Users can Fleet text, reactions to Tweets, photos or videos and customize their Fleets with various background and text options. Stickers and live broadcasting will be available soon, Twitter said.

Twitter has resolved most performance issues with its new ephemeral "fleets" product and expects to complete the global launch by Friday, the company's product chief said in a live video on Thursday.

Twitter Inc <TWTR.N> said on Wednesday it was testing in Brazil a new type of tweet that disappears after 24 hours, similar to the stories feature popular on Snapchat <SNAP.N> and ...