This solution brief outlines the Data Center Interconnect (DCI) over Carrier Ethernet, emphasizing its significance as enterprises advance their digital transformation initiatives. The document details how traditional DCI requirements are evolving due to the rise of AI-driven workflows, necessitating high-capacity, low-latency connectivity. It describes the capabilities of Carrier Ethernet in meeting these demands, including assured performance, robust resiliency, and operational efficiency. The brief also highlights the advantages of Carrier Ethernet, such as efficient bandwidth utilization, network topology flexibility, and enhanced security features. The RAD ETX-2i-400G platform is presented as a key component, providing high-performance, low-latency transport, and advanced traffic management capabilities. Furthermore, the document includes use case examples demonstrating the application of DCI in AI-driven environments, specifically for financial institutions requiring reliable and secure data exchange across multiple locations. Overall, the brief serves as a comprehensive guide for Communications Service Providers (CSPs) looking to leverage Carrier Ethernet for next-generation DCI solutions.