# Key Concepts **Channels** are secure entry points for external data in Flow Plus. They provide unique URLs where third-party services can send information via webhooks. **Webhooks** are messages sent from external systems to your Flow Plus channels. They carry specific information, like "a new order in your ERP" or "a customer status change in your CRM". A **workflow** in Flow Plus combines a webhook with actions in Shopify Flow. For example: "When a new order comes from the ERP, update Shopify inventory and notify the fulfillment team." **Templates** are pre-built workflows for common Shopify Plus scenarios. They're ready to use or can be customized to fit your needs. In a workflow: * The webhook acts as the **trigger**, starting the process. * **Actions** are the steps in Shopify Flow that follow, processing the external data. When a channel receives a matching webhook, it starts a workflow. We call each run of a workflow an **automation run**. Flow Plus handles **enterprise-scale automation**, processing millions of events monthly without API limits. The power of Flow Plus is in connecting **external systems** to Shopify workflows without coding. It brings your external data directly into your Shopify Plus store's automation ecosystem. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://support.flowplusapp.com/overview/welcome-to-flow-plus/key-concepts.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.