Publicis, the world’s third-largest advertising agency by revenues, has unveiled a wide-ranging strategic plan for the next three years to position itself in an industry beset by widespread disruption and the lowest growth since the financial crisis. The group’s execution plan, announced on Tuesday ahead of an investor day in London, includes targets for up to €1.5bn in bolt-on acquisitions (in the field of data, dynamic creativity and digital transformation), €450m in cost savings and adding thousands of people to its technology execution centres by 2020.