Contents
1. Introduction
2. The Role of X-ray Surveys in Understanding the Nature and the Evolution of SMBHs
3. AXIS Pillar 1: Determining the Nature of SMBH Seeds with AXIS at $z=6-10$ XLF
4. Assembly of Black Holes with Large-Scale Structures as Traced by High-z AGN Clustering
5. AXIS Survey of The First AGN
6. Conclusions