Reference: https://docs.cloud.oracle.com/en-us/iaas/data-safe/doc/oracle-data-safe-overview.html

Explanation
Cloud Horizontal Scaling refersto provisioning additional servers to meet your needs, often splitting workloads between servers to limit the number of requests any individual server is getting. In a cloud-based environment, this would mean adding additional instances instead of movingto a larger instance size.
Cloud Vertical Scaling refers to adding more CPU or memory to an existing server, or replacing one server with a more powerful server.

Explanation
You can filter Costs Analysis Tools by following three ways
To filter costs by dates
To filter costs by tags
To filter costs by compartments

Reference: https://blogs.oracle.com/cloud-infrastructure/announcing-oracle-functions