Final answer:
The Oracle Cloud Infrastructure service for running Apache Spark applications is OCI Data Flow, a fully managed service that simplifies data processing without the need to maintain infrastructure.
Step-by-step explanation:
If you are seeking to run Apache Spark applications, the Oracle Cloud Infrastructure (OCI) service that will facilitate this is the Data Flow service. OCI Data Flow is a fully managed service that allows you to run Apache Spark applications without the need to set up or maintain a complex data processing infrastructure. This means that you can focus on writing your Spark applications while the OCI Data Flow service handles the details of deployment, execution, and scaling. As a fully managed Apache Spark service, it provides a straightforward and cost-effective solution for processing large amounts of data.