Availability: Open Source

Written in : Java, Scala

It is an open source near real time, an asynchronous computational framework for stream processing

Kafka, YARN, Samza API fits together to form Samza

It is made up of three layers:
1. A streaming layer.
2. An execution layer.
3. A processing layer.

It supports all three layers in terms of the out of the box support
1. Streaming: Kafka
2. Execution: YARN
3. Processing: Samza API

Simple API

Managed State

Fault tolerance

Durability, Scalability

Pluggable

Process isolation