The paper “Efficient Control Flow in Dataflow Systems: When Ease-of-Use Meets High Performance” of six BIFOLD researchers was honored with a 2021 ACM SIGMOD Research Highlights Award. This prestigious award recognizes the work of Gábor E. Gévay, Tilmann Rabl, Sebastian Breß, Lorand Madai-Tahy, Jorge-Arnulfo Quiané-Ruiz and Volker Markl as a definitive milestone and emphasizes its potentially significant impact. A short version of their paper (Imperative or Functional Control Flow Handling: Why not the Best of Both Worlds?), which emphasizes the advantages of combining imperative and functional control flow in dataflow systems, is published in the 2021 ACM SIGMOD Research Highlights special issue. The paper was already distinguished with a Best Paper Award at the 37. IEEE International Conference on Data Engineering (ICDE) 2021.