GCP Pub/Sub is Google Cloud's event streaming platform. It's a popular piece of infrastructure for many of our architectures running Google Cloud Platform, including mass event ingestion, communication of serverless workloads and streaming data-processing workflows. One of its unique features is support of pull and push subscriptions: subscribing to receive all published messages available at the time of subscription or pushing messages to a particular endpoint. Our teams have enjoyed its reliability and scale and that it just works as advertised.