Effective enrollment of devices in a Public Key Infrastructure (PKI) is crucial for establishing unique, robust, and secure identities for devices. The IoT Edge Enroll service is a comprehensive registration authority that facilitates straightforward, secure, and optimized device enrollment processes. This service plays a vital role in our PKI-driven IoT Identity Platform, which supports the management of device identity throughout its lifecycle. As the most extensive and adaptable commercial PKI device enrollment feature set on the market, it stands out for its capabilities. The Certificate Templating Engine allows for precise enrollment by utilizing custom certificate fields and tailored data, providing exceptional adaptability to meet various IoT authentication needs. Additionally, the Device Identity Manager presents administrative control, enabling the management of distinct device identities across their entire lifecycles, including tasks such as certificate auditing and reporting, device whitelist management, and controlling device enablement or disablement, as well as determining eligibility for enrollment. With these features, organizations can ensure a streamlined approach to device identity management, enhancing the overall security of their IoT ecosystems.