Although there is a score of benefits of using Kafka, we can list down some key benefits which are making the tool more popular in-stream messaging platforms. The below diagram has summarized the key benefits : 

1. High throughput: It FACILITATES handling of large volume and high-velocity data without the need of investing in hardware. The Kafka system can process thousands of messages in a second which make it a high throughput system.
2. Low Latency: Not even it supports high volume data but at the same time low latency SUPPORT processing high volume data in milliseconds makes it more suitable for big enterprises where we have to handle large VOLUMES of data in quick time.
3. Fault-tolerant: The CLUSTERING model of Kafka architecture make it fault-tolerant and it ensures data persist even in case of system failure.
4. Durability:Once messages are written in Kafka, it gets REPLICATED across different nodes so data durability gets increased and at the same ensure no data loss. 
5. Scalability: The clustering model allows Kafka to add more nodes or remove nodes in case of load increases or reduces. We do not need any downtime to achieve the same. We can add nodes on the fly in caseload increases.