  Distributed denial of service attacks represents one of the most important
threats to cloud-providers. Over the years, volumetric DDoS attacks have become
increasingly important and complex. Due to the rapid adaptation of attackers to
the detection and mitigation methods designed to counter them, the industry
needs to constantly monitor and analyse the attacks they face. In this paper,
we present an overview of the attacks that were perpetrated against our
infrastructure in 2021. Our motivation is to give an insight of the challenge
that DDoS attacks still represent within a large European cloud provider
