Paradise Again features guest appearances from 070 Shake, ASAP Rocky, Connie Constance, Jacob Mühlrad, Mapei, Seinabo Sey, Sting, Ty Dolla Sign, and the Weeknd.

[5] To promote the album, Swedish House Mafia embarked on the Paradise Again World Tour and headlined the Coachella Valley Music and Arts Festival alongside the Weeknd.

In February 2021, Swedish House Mafia's art director Alexander Wessley and their manager Max Holmstrand shared videos of the supergroup working on new music.

[18] Swedish House Mafia performed a medley of "It Gets Better" and "Lifetime" on the Tonight Show Starring Jimmy Fallon and on the pre-show at the 2021 MTV Video Music Awards.

[22] In April, ten days before the festival began, the supergroup were announced to be taking over Kanye West's Sunday spot after he dropped out, while also revealing that they would be headlining the show alongside the Weeknd.

[30] Ali Shutler of NME praised Swedish House Mafia for taking risks "rather than sounding like a vintage group struggling to find their identity" and that the album has the trio "flexing their musical and emotional muscles across 17 brilliant, fearless and often surprising tracks.