Posted in Business & Finance, Engineering D3A stands for Decide, Detect, Deliver, and Assess (US DoD) D3A stands for Design 3 Architecture (architectural firm; Monroeville, PA) D3A Share Pinterest Tweet Whatsapp Post navigation C2BMCDAASS Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Email * Website Save my name, email, and website in this browser for the next time I comment.