What is the Navi protocol?

Can you explain to me what the Navi protocol is in a nutshell? I've heard it's related to cryptocurrency and blockchain technology, but I'm not entirely sure how it works or what sets it apart from other similar platforms. Is it a decentralized finance (DeFi) protocol? What are some of the key features and benefits of Navi? And how does it aim to address the challenges and limitations of existing systems in the cryptocurrency and finance space?