Concepts

Object Storage uses the following concepts:

Concept	Description
Bucket	A logical entity that helps store objects.
Object	Any format of data uploaded by the user.
Bucket versioning	A feature that lets you store multiple copies of an object in a bucket.
Bucket object lifecycles	Rules for automatically deleting objects and changing their storage class.
Pre-signed URLs	A method for granting anonymous users access to storage operations.
Multipart upload	A method for uploading large objects.
Access control lists	A mechanism for granting access to objects and buckets.
Access policy	A mechanism for managing rights to perform actions with objects and buckets.
Uploading data via an HTML form	A method for uploading objects to storage from a browser. Allows anonymous users to upload objects to buckets.
Storage class	A way to reduce the cost of storing objects by dividing them into frequently accessed objects and long-term storage objects.
Backups	Procedure for backing up data stored in Object Storage.
Quotas and limits	Service use restrictions.

See also the general resource hierarchy Yandex.Cloud.