Final answer:
The OCI API Gateway service does not include built-in support for data storage, which is not a characteristic of API gateways. These gateways focus on managing data flow, not on storing it.
Step-by-step explanation:
When considering the characteristics of the OCI API Gateway service, it's important to note that this service includes features designed to handle API traffic and provide additional security, such as throttling, authentication, and analytics. However, the OCI API Gateway does not include built-in support for data storage, as this is not typically a feature of API gateways. API gateways are primarily responsible for managing data flow between clients and back-end services, but they do not store the data themselves; this function is typically handled by other services such as databases or file storage solutions.