StreamNative, founded by core developers of Apache Pulsar 129 , runs managed Pulsar (Apache Pulsar) in StreamNative Cloud, and its Pulsar clusters also accept Kafka 129 clients next to Pulsar, MQTT and REST ones, so one service can serve BookNest's Kafka producers and Pulsar consumers alike. Two newer engines target Kafka users. Ursa (generally available on AWS 24 since early 2025, in public preview on Azure 6 and Google Cloud 1 ) is a leaderless, Kafka-compatible engine that writes streams to object storage as lakehouse tables in Iceberg 129 or Delta Lake 237,929 format, so the data Lakehouses, Data Quality and Governance lands with a connector would already be a table. Ursa For Kafka, in limited public preview since 7 April 2026 on AWS and Google Cloud, is a fork of Apache Kafka 4.2 whose topics can be latency-optimized on broker disks or cost-optimized on that lakehouse storage, within one cluster.
| Deployment | Billing unit | List rate | Starts at |
|---|---|---|---|
| Serverless | ETU: 5 MB/s in, 15 MB/s out | $0.10 per ETU-hour | $73 a month |
| BYOC | ETU: 25 MB/s in, 75 MB/s out | $0.50 per ETU-hour | $365 a month |
| Dedicated (Pulsar) | Compute unit (2 CPUs, 8 GB) and storage unit (+1 TB) | $0.24 and $0.30 per hour | $505 a month |
New accounts receive $200 of credit with no credit card. The pricing page lists Kafka clusters on Serverless as "coming soon", so on Serverless today Kafka clients use a Pulsar cluster's Kafka endpoint. It fits Pulsar users and streams meant for a lakehouse; for BookNest's plain Kafka it adds a technology.