What is BEP20 smart chain?

Could you elaborate on the BEP20 smart chain and its significance in the cryptocurrency ecosystem? As a practitioner in the field of cryptocurrency and finance, I'm curious to understand how it differs from other blockchain protocols. Specifically, what are the key features and advantages of BEP20? How does it enable developers to create and deploy decentralized applications? Furthermore, how does it integrate with Binance Smart Chain and what role does it play in enhancing the interoperability and scalability of the blockchain? I'd appreciate a concise yet comprehensive overview of BEP20 and its implications in the evolving cryptocurrency landscape.