Although parts of this book will concentrate on examples of Apache Spark installed on physically server-based clusters, we want to make a point that there are multiple cloud-based options out there that imply many benefits. There are cloud-based systems that use Apache Spark as an integrated component and cloud-based systems that offer Spark as a service. Even though this book cannot cover all of them in depth, it would be useful to mention some of them:

• Chapter 13, Apache Spark with Jupyter Notebooks on IBM DataScience Experience, is an example of a completely open source based offering from IBM
• Chapter 14, Apache Spark on Kubernetes, covers the Kubernetes Cloud Orchestrator, which is available as offering of on many cloud services (including IBM) and also rapidly becoming state-of-the-art in enterprise data centers