Millennials are typically defined as those born between 1980 and 2000. Altogether, there are 1.8 billion millennials in the world, roughly a quarter of the world’s population. Today, about one-third of the American workforce are millennials. However, by 2025, they will represent three-quarters of the world’s workforce. Aware of this, established firms must adapt, to better align with their qualifications, tastes and expectations. We will present millennials as part of the workforce but also as part of our society as a whole, and so we will finally frame them as challenging target customers for companies.