Webhooks and WebSockets are two popular methods of end-to-end communication used by services and applications to share information. The primary difference between them lies in the method of communication, with webhooks being one-way server-to-server communication and WebSockets being primarily used for two-way communication between a client and server. Webhooks are useful when an event needs to be notified about an occurrence in a system, such as a status change or update to a specific entity, while WebSockets are suitable for scenarios requiring real-time data exchange between clients and servers, like document editing services or chatbots. The main advantage of webhooks is that they allow the client to send messages back to the server, but this comes at the cost of making the server stateful and more difficult to scale. In contrast, WebSockets open a connection between a specific client and server, allowing for real-time communication without latency issues, but can make scaling more challenging. Ultimately, webhooks are best suited for one-way communication with scaling in mind, while WebSockets are ideal for two-way communication requiring real-time data exchange.