Apache Kafka is a fast, real-time, distributed, fault-tolerant message broker.

Using Kafka, you can transfer streaming data to the cluster, which is generated continuously, for example, a history of website visits, financial transactions, online shopping orders, application logs, etc. This information can help to understand what is happening with the data right now, create recommendations, use machine learning or aggregate data for further analysis. All this takes seconds or minutes, instead of hours and days.