Why it matters

Object storage anchors data lakes and content platforms. OCI's competitive pricing and S3 compatibility make it a viable choice for cost-sensitive deployments.

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The architecture

Objects live in buckets. Buckets have a compartment (for IAM), a storage tier default, and a namespace (per-tenancy, unlike S3's global).

Storage tiers: Standard (frequent), Infrequent Access (monthly), Archive (deep freeze, retrieval takes hours).

OCI Object Storage modelBucketin compartmentStorage tierStandard/IA/ArchiveObjectwith metadataNamespace is per-tenancy (unlike S3 global), which simplifies naming
Bucket + tier configuration.
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How it works end to end

Multipart upload for large objects. Pre-authenticated requests (PARs) for time-limited unauthenticated access, similar to S3 presigned URLs.

Lifecycle policies transition objects between tiers based on age.

S3-compatible API: existing S3 tools and libraries work with OCI Object Storage. Great for migration.