Estuary

Estuary is a managed ETL and data integration platform for data teams running CDC, batch and streaming pipelines into warehouses, lakes and Kafka.

Estuary moves data out of operational databases, SaaS applications and event streams into the warehouses, lakes and topics where teams analyse it. It reads database transaction logs through change data capture, so inserts, updates and deletes arrive as they happen instead of in a nightly job. Each destination can receive data continuously or on a schedule the team sets. Estuary Technologies, Inc. builds and runs the platform; the company was founded in 2019 and is based in New York. Captures pull from sources such as PostgreSQL, MySQL and MongoDB and write into collections, which hold the data as it flows. Materializations deliver those collections to Snowflake, BigQuery, Databricks, ClickHouse or Apache Iceberg tables on object storage. Derivations transform data in flight with SQL or TypeScript, and redaction blocks or hashes a field before it is written. Schema evolution carries source changes through to the destination, and a backfill reloads one collection without rebuilding the rest. Dekaf, a Kafka-compatible API, lets existing Kafka consumers read collections directly. Data engineering teams that keep dashboards, operational applications and AI systems fed from production databases are the core users. It fits teams that want streaming and batch delivery in one tool rather than two. Engineers can build pipelines in the Estuary web app or define them as YAML specs and publish them with the flowctl CLI. Regulated organisations can run a private data plane, or one inside their own cloud account, while Estuary hosts the control plane. A typical job replicates a PostgreSQL or MySQL database into Snowflake or BigQuery so analysts query current rows rather than yesterday's export. Another lands change streams as Iceberg tables for a lakehouse, then triggers a dbt Cloud job when new data arrives. Real-time analytics teams send streams into ClickHouse, or into Tinybird and StarTree, two analytics services Estuary partners with. Teams that work through a coding agent can use Estuary's Agent Skills to draft a pipeline from a plain-language prompt. Task logs, data stats and email alerts in the web app show when a pipeline stalls, before a report goes stale.