Event detection encompasses anomaly detection, change point detection, and motif discovery, each offering opportunities for further study. Exploring the interplay among these areas is also important. Numerous research works in event detection are ongoing, making it impossible for a book like this to provide a definitive conclusion. However, it gives readers the fundamental basis to support their deep dive into the novel trends of these research areas. This chapter concludes the book, summarizing how these research areas are being studied (Sect. 8.1) and highlighting the main challenges in the field (Sect. 8.2).