What ASD means?

Excuse me, could you please clarify what you mean by "ASD"? It's not immediately apparent to me which acronym or abbreviation you're referring to, as "ASD" can stand for various things in different contexts. Could you provide some additional information or context to help me better understand your question? For example, is it related to finance, cryptocurrency, psychology, or something else entirely? With more information, I'd be happy to give you a detailed explanation of what "ASD" means in that particular context.