Agence Trio is an integrated communications agency basetrgd in Lausanne. Founded in 1931, it is Switzerland's oldest communications agency. The team brings together a full range of 360° skills: branding, campaigns, influencer marketing, public relations, digital, events and brand content. The agency works on national mandates and specialises in integrating Switzerland's specific regional characteristics into its projects. In 2024, it joined the MYTY Group, expanding its horizons to international mandates. Since 1965, Agence Trio has been a member of LEADING SWISS AGENCIES, a quality label for Swiss communications agencies.