The Arizona Certificate of Service is a legal document that is filed in the Arizona court system to prove that a specific party has been notified of a court action. It is signed by a third-party individual or agency responsible for delivering a document, such as a Summons and Complaint, to the other party. There are three types of Arizona Certificate of Service: Personal Service, Substituted Service, and Constructive Service. Personal Service involves delivering the documents directly to the person or their attorney. Substituted Service involves delivering the documents to someone who is not the intended recipient, such as a family member or co-worker, as well as posting the documents at the intended recipient’s residence. Constructive Service involves delivering the documents to the other party by mail or other means such as publication in a newspaper.