A ProDomme is a woman who can be hired to perform BDSM services. "Domme" is feminized version of the word "Dom" which is used to refer to the dominant partner in a dominant/submissive BDSM pairing. ProDommes frequently get categorized alongside prostitutes when, in actuality, they typically focus exclusively on BDSM practices and do not engage in sex acts with clients.
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A ProDomme typically conducts sessions consisting of BDSM "scenes" or roleplays in a dungeon or other such space that is dedicated for such a use. Depending on the nature of a scene, it may be possible to conduct it remotely via email, phone, or web cam. It is not uncommon for a ProDomme to develop a long-term relationship with a client. In this relationship, she may develop an understanding of their client's fetishes and even their psychological needs.