AWS DevOps Engineer Professional Practice Test 2025 - Free DevOps Practice Questions and Certification Study Guide

AWS S3 versioning is a feature that enables you to keep multiple versions of an object within a single bucket. When versioning is enabled, every time an object is modified or deleted, a new version of that object is created, allowing you to track, retrieve, and restore previous versions if needed. This is particularly useful for protecting against accidental overwrites or deletions, as you can easily revert to an earlier version of an object.

Versioning also enhances data management by allowing you to maintain a complete history of changes made to your objects, which can be essential for compliance, audit trails, and recovering from errors. This capability is at the core of why option C is the most relevant among the choices provided, making it a critical feature for users who require strict data management and security practices in their S3 buckets.

Other options, while relevant to various aspects of S3, do not accurately reflect the specific functionality of versioning. For instance, creating backups of buckets would generally involve additional mechanisms or services to ensure data recovery rather than the built-in feature of versioning. Similarly, access control policies and object replication functions serve different purposes, focusing more on permissions and cross-region data availability rather than maintaining multiple versions of data within a single bucket.