Beyond heading a monastery, archimandrite has long served Orthodox patriarchs and bishops as a title for a trusted monastic priest sent to represent them where they cannot be present in person, most visibly as the head of a patriarchal or diocesan representation, called an exarchate or metochion, in a foreign city. An archimandrite posted this way functions somewhat like an ecclesiastical ambassador, maintaining the sending church's presence, property, and relations with local Orthodox communities and other churches in that place.
The word itself derives from the Greek for the leader of a mandra, a sheepfold or enclosure, an image for the monastic community he governs that parallels the shepherd imagery used for bishops more broadly. Because the rank can be granted purely as an honor, without any monastery or exarchate actually attached to it, a given archimandrite's day to day role varies considerably: some govern a working monastic community, some serve a diocese's cathedral or chancery in a senior administrative capacity, and some hold the title chiefly in recognition of scholarship, decades of service, or standing within their church, with no distinct administrative charge attached to the rank itself.