In the context of UiPath, a Thin Client refers to an application that is accessed over a network such as a web application or a remote desktop. It is typically a browser-based interface or a virtual desktop infrastructure (VDI) like Remote Desktops. Thin clients do not run the application locally; instead, they rely on a server to process the application tasks. This contrasts with Thick Clients, which are applications installed locally on a machine where UiPath can directly interact with the elements of the application1.
References: The explanation is based on the UiPath Community Forum discussions and the UiPath Documentation Portal's information on thin client automation1.