Cubbit DS3

Geo-distributed, multi-tenant S3-compatible object storage built around a "Swarm" architecture — encrypted shards distributed across nodes that can span single-site to multi-site to fully geo-distributed topologies. Three-entity design: **Agent** (data-plane node), **Coordinator** (centralized microservices that orchestrate the swarm), **SDK / S3 Gateway** (external access surface). AES-256 client-side encryption, with data fragments scattered such that no single site (or, depending on topology, no single jurisdiction) holds the complete object.

European customers face a hard data-sovereignty requirement post-GDPR + 2026 Schrems-III ruling — data has to provably stay in EU jurisdictions, not just in EU regions of US hyperscaler clouds. Cubbit's bet is sovereign geo-distribution as a first-class property: customers control the topology (which sites participate in which swarms), the SDK presents standard S3, and the underlying replication enforces the residency constraint cryptographically. The 2026 framing is "sovereign + geo-resilient by design".

EU-sovereign object storage for regulated industries that can't store data on US-owned infrastructure, multi-site backup with mandatory geo-distribution, sovereign cloud builds (DIY private clouds via DS3 Composer), telco / utility / government workloads where individual sites can fail without service degradation, and hybrid setups where customer-owned hardware participates in a vendor-coordinated swarm.