What is the recommended service for workloads that require automatic scaling in OCI?

The recommended service for workloads that require automatic scaling in Oracle Cloud Infrastructure (OCI) is the OCI Autonomous Database. This service is designed to handle variable workloads efficiently by automatically adjusting compute and storage resources as needed. This capability allows it to accommodate spikes in demand without manual intervention, ensuring optimal performance while minimizing costs. The Autonomous Database leverages machine learning and automation to both scale and manage the database, thus allowing you to focus more on data insights rather than infrastructure management.

While other services mentioned may have features relevant to scaling, they do not specifically cater to the automatic scaling of database workloads in the same robust manner as the Autonomous Database. For instance, OCI Load Balancer efficiently distributes traffic among different back-end resources but does not intrinsically manage database scaling. OCI Functions allows for event-driven execution of code and can scale automatically based on the number of incoming requests, but it is not tailored for database workloads. OCI Data Science provides tools for building machine learning models, but it does not focus on the automatic scaling of database resources.

Given these considerations, the OCI Autonomous Database stands out as the most suitable option for scenarios requiring automatic scaling of workloads.