Webhooks are very common for server-to-server communication and have been in use for several years (though they only really took off in the last couple). They are ready for primetime and there are lots of best-practices in the industry around how to implement and use webhooks.
They also go by other names such as: PubSubHubBub (PSHB), real-time API, push API, web callbacks... Basically it is just a URL endpoint that accepts POST requests with form data or JSON body payloads that come from server-generated events from other systems.
Webhooks are very common for server-to-server communication and have been in use for several years (though they only really took off in the last couple). They are ready for primetime and there are lots of best-practices in the industry around how to implement and use webhooks.
They also go by other names such as: PubSubHubBub (PSHB), real-time API, push API, web callbacks... Basically it is just a URL endpoint that accepts POST requests with form data or JSON body payloads that come from server-generated events from other systems.