Cloud services’ growth depends on secure connectivity. Safeguarding sensitive and mission-critical data is essential to protect intellectual property and confidential records, and app-to-app communications between data centers may require encryption as well. To avoid costly fines and loss of revenue due to data breaches, Data Center Interconnect (DCI) networks must be secured. Optical layer encryption on the Waveserver Ai provides first-level, simple-to-implement defense for communications between data centers.