What is ENA based on?

Could you please elaborate on the foundation of ENA? I'm curious to understand what principles or technologies it's built upon. Could you explain the core concepts that ENA relies on and how these contribute to its functionality and uniqueness? I'm interested in gaining a deeper understanding of ENA's architectural backbone and the underlying mechanisms that drive its operations. Could you possibly provide some insight into the technological advancements or innovations that ENA incorporates, and how these enhance its overall performance and reliability? Thank you for your assistance in clarifying this matter.