What is the XI protocol?

Could you please elaborate on the XI protocol? I've heard it mentioned in the crypto space but am not entirely familiar with its intricacies. What does it aim to achieve? How does it work under the hood? Are there any specific applications or use cases that it's tailored for? Also, how does it differ from other protocols in the cryptocurrency and finance landscape? I'm curious to understand its potential impact and significance in this rapidly evolving field.