The role of Triggers in the UiPath Integration Service is to provide a mechanism for subscribing to specific events from third-party applications, automatically starting processes in Orchestrator. The UiPath Integration Service is a cloud-based service that enables seamless integration between UiPath and various external applications, such as Salesforce, ServiceNow, Workday, and more. The Integration Service allows the developer to create Triggers that define the conditions and actions for starting processes in Orchestrator based on events that occur in the external applications. For example, a Trigger can be created to start a process that updates a customer record in UiPath when a case is closed in Salesforce. The Triggers can be configured and managed from the UiPath Integration Service portal or from the UiPath Studio.