What is the Dexe network?

Could you elaborate on the Dexe network for me, please? I've heard it mentioned in the cryptocurrency circles but I'm not entirely familiar with its workings. Is it a decentralized exchange? If so, how does it differentiate itself from other exchanges in the market? What are some of its key features and benefits? I'm also curious to know about its security measures and how it ensures the safety of its users' funds. Additionally, how does the Dexe network handle scalability issues and maintain high transaction speeds? I'd appreciate a concise yet comprehensive overview of the Dexe network and its role in the cryptocurrency landscape.