Event-driven servers

Servers that provide reactions to notifications of client events or state changes — using the event-driven architectural pattern that maximizes scalability by minimizing the number of required connections needed to handle large numbers of concurrent clients.

AWS SNS

SNS is a simple, distributed, cloud-native messaging service.

Amazon Kinesis Data Streams

Kinesis Data Streams is a scalable and durable realtime data streaming service.

Apache Kafka

Apache Kafka is a popular open-source event-streaming platform.

Google Cloud Pub/Sub

Google Cloud Pub/Sub is a pub/sub-based messaging service.

IronMQ

IronMQ is a message queuing service for distributed cloud applications.