In today's digital age, cloud services are omnipresent. Despite their popularity, grave concerns regarding the security within the underlying datacenters persist. Recognizing the paradigm shifts from traditional security perimeter towards a zero-trust model,  Quantum Key Distribution (QKD) offers the most secure cryptographic key exchange method. But the challenge lies in integrating QKD seamlessly into datacenter infrastructure without compromising on performance or scalability. Here's where QISS.ME enters with a revolutionary approach to achieving system-in-package integration of QKD directly into datacenter switches. This involves creating an extremely compact integrated QKD transmitter, capitalizing on the mature silicon photonics integration platform.