In recent years, mainstream financial institutions like DBS Bank, BNY Mellon, and Fidelity have entered the digital asset space to serve retail and institutional clients, driving demand for secure asset custody. However, this is still a nascent industry, and financial institutions must carefully navigate many technical and procedural challenges. This report helps technology and digital business leaders understand the key tech supporting digital asset custody, the core capabilities of representative custody providers, and early good practices for integrating these solutions.