What is APEX framework?

Could you please elaborate on the APEX framework? What exactly does it entail? How is it relevant to the world of cryptocurrency and finance? Is it a new approach to managing digital assets or a specific set of guidelines for the industry? I'm particularly interested in understanding its CORE principles and how it aims to improve the overall ecosystem. Additionally, are there any notable companies or projects that have already adopted the APEX framework, and what are the benefits they've experienced so far?