What is the correct URL type when exporting a custom image from OCI?

The correct choice for exporting a custom image from Oracle Cloud Infrastructure (OCI) is the Object Storage URL. When custom images are created in OCI, they are typically stored in Object Storage, which is designed to handle unstructured data and provides scalable object storage for a wide variety of workloads.

Object Storage allows for the efficient management and retrieval of images and other binary data, making it the appropriate choice for operations involving custom images, such as exporting and sharing these images. The nature of object storage also supports high durability and redundancy, ensuring that the custom images are safe and accessible.

Using Block Volume URLs or File Storage Service URLs would not be suitable for this scenario, as these services are optimized for different types of data storage and access patterns. Block Volume is used for persistent storage for compute instances and is designed for high-performance workloads requiring low-latency access, while File Storage Service is tailored for shared file systems. Archive Storage, on the other hand, is typically used for long-term storage and is not designed for frequent access, making it less suitable for custom images that need to be exported.

Therefore, the Object Storage URL is the correct and logical choice for exporting a custom image in OCI.