<ul><li>Amazon S3 is a fundamental object storage service within AWS that replicates data across 3 availability zones automatically, allows up to 5TB object size, and mandates globally unique bucket names.</li><li>Essential S3 commands include getting AWS identity, listing buckets, checking bucket contents, and moving objects between buckets.</li><li>Different storage classes like S3 Standard, S3 Standard-IA, S3 Intelligent Tiering, S3 One Zone-IA, and Glacier options cater to varying data access needs and costs.</li><li>Security features in Amazon S3 include encryption options like SSE-S3, access control through bucket policies and pre-signed URLs, and pro tips for efficient S3 management.</li></ul>

Understanding Amazon S3: A Deep Dive into Cloud Storage 🚀

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