Which McDonald's slogan was introduced globally in 2003?

“I'm lovin' it” was introduced globally as McDonald's slogan in 2003.

The campaign was launched internationally with advertising, music, and a distinctive lowercase presentation of the phrase. It became one of McDonald's longest-running global brand platforms and was adapted across many countries and languages.

The campaign is associated with a song produced by Pharrell Williams and recorded for the advertising campaign by Justin Timberlake. The phrase itself became closely linked to McDonald's packaging, television commercials, and restaurant promotions.

It is often mixed up with “You deserve a break today,” an earlier McDonald's slogan from the 1970s. Those slogans belong to different eras, while “I'm lovin' it” identifies the modern global campaign launched in 2003.