エロイプ is a portmanteau of "ero" (erotic) and "Skype," referring to intimate, real-time interactions conducted through video or voice communication platforms. Originating around 2009, this term describes live erotic exchanges where participants engage in private, often one-on-one sessions that combine sexual content with the immediacy of digital communication.

The エロイプ genre captures the spontaneity and interactive nature of live erotic communication, distinguishing itself from pre-recorded content through its emphasis on real-time responsiveness and the unique dynamics that emerge from screen-mediated intimacy. Participants range from amateur individuals to content creators, with sessions often unfolding organically as personal desires and fantasies are shared and explored in the moment.