Communication is inextricably important to instructional design and performance-based training. Promoting effective communication as an integral part of the performance support system improves professional instructional design functions and offers greater avenues for meaningful discourse among end users of the instruction. In this article, we highlight communication in performance training and instruction for meaningful learning and effective exchange of knowledge. Internal and external communications are discussed as a means to promoting successful relationships, commitment, and ownership. (Contains 3 tables and 1 figure.)