Azure Service Bus vs Kafka: What are the differences?
Azure Service Bus: Reliable cloud messaging as a service (MaaS) *. It is a cloud messaging system for connecting apps and devices across public and private clouds. You can depend on it when you need highly-reliable cloud messaging service between applications and services, even when one or more is offline; *Kafka:** Distributed, fault tolerant, high throughput pub-sub messaging system. Kafka is a distributed, partitioned, replicated commit log service. It provides the functionality of a messaging system, but with a unique design.
Azure Service Bus and Kafka can be primarily classified as "Message Queue" tools.
Kafka is an open source tool with 13.1K GitHub stars and 6.99K GitHub forks. Here's a link to Kafka's open source repository on GitHub.
According to the StackShare community, Kafka has a broader approval, being mentioned in 691 company stacks & 2399 developers stacks; compared to Azure Service Bus, which is listed in 11 company stacks and 8 developer stacks.