The agency was appointed without a pitch, having previously handled some project work for the client, and joins Pernod Ricard’s UK roster.
The incumbent was Isobar.
Pernod Ricard UK’s marketing controller, Adam Boita, said: "We are very excited about embarking on this new digital partnership with AIS London and believe that their creative thinking and proven experience in social makes them the ideal agency to ensure our brands stand out in the digital space."
AnalogFolk, Malibu’s global creative agency, is unaffected.
AIS recently moved into the Havas "media village" alongside Havas Media and Arena to work more closely with specialists across the group.