What is Object Storage?
* All data, regardless of content type, is managed as objects
* Each object is stored in a bucket. A bucket is a logical container for storing objects
* Objects are stored in a single, flat structure without a folder hierarchy. This means that accessing individual objects is fast and easy
* Each Object is composed of object itself and metadata of the object. T his makes it easier to index and access data
* Object storage is quite common in cloud based storage scenarios with very high scalability and reliability
* While files and blocks are generally available to an operating system (by mount operation), object storage relies on standard HTTP verbs

Explanation
Whenyou sign up for Oracle Cloud Infrastructure, Oracle creates a tenancy for you in one region. This is your home region. Your home region is where your IAM resources are defined. When you subscribe to another region, your IAM resources are available in the new region, however, the master definitions reside in your home region and can only be changed there.
When you subscribe your tenancy to a new region, all the policies from your home region are enforced in the new region. If you want to limit access forgroups of users to specific regions, you can write policies to grant access to specific regions only.

Instance Principals
* Instance Principals lets instances (and applications) to make API calls against other OCI services removing the need to configure user credentials or a configuration file. Reference:
https://www.youtube.com/watch?v=aXDoukETIk&list=PLKCk3OyNwIzuHYigVbdtDOZOfChcotfj2&index=
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