Bufstream

Beta

Protobuf-first Kafka

Improve data quality and slash cloud costs with Bufstream, a drop-in replacement for Apache Kafka.

Bufstream

10x lower cloud costs

Bufstream replaces traditional disks with object storage, the most reliable and cost-effective cloud storage primitive. By eliminating expensive network-attached volumes and delegating cross-zone data replication to object storage, Bufstream reduces cloud costs 10x compared to Apache Kafka — while remaining fully compatible with Kafka clients, connectors, and tools.

Reduce cloud costs 4x

Guaranteed data quality

Bufstream eliminates bad data at the source: rather than hoping that every producer will opt into validation, Bufstream agents work with the Buf Schema Registry to enforce quality controls for all topics with Protobuf schemas. Bad data is immediately rejected, so consumers can trust that the data they receive will always match the appropriate schema and adhere to any semantic constraints.

Guaranteed data quality

Air-gapped deployment

Your data is your most valuable, sensitive asset — you should own it. Bufstream runs fully within your AWS or GCP VPC, without any dependencies on external services.

Air-gapped deployment

Coming soon: Iceberg and RBAC

Over the coming months, Bufstream will natively support Apache Iceberg and field-level access controls. Publishing to a topic will automatically produce a ready-to-query Iceberg table, and Bufstream agents will use schema annotations to hide sensitive fields from less-privileged consumers.

Coming soon: Apache Iceberg

Transparent pricing

Bufstream pricing is simple: just $0.002 per gibibyte written, without any per-core, per-agent, or per-call fees. Since pricing is usage-based, idle clusters are free.

Transparent pricing

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