1. The official beginning or introduction of a marketing, political, or advertising campaign
The campaign launch was scheduled for Monday morning with a press conference.
O lançamento da campanha foi agendado para segunda-feira de manhã com uma coletiva de imprensa.
2. The event or activity marking the start of a coordinated effort to promote or publicize something
The product campaign launch exceeded all expectations with thousands of attendees.
O lançamento da campanha do produto superou todas as expectativas com milhares de participantes.