Weld is a data movement platform for data, analytics and AI teams. It runs ELT syncs, change data capture streaming and backfills from many sources into a data warehouse, transforms the data with SQL and dbt including tests, schedules the workflows, and syncs results back to business tools through reverse ETL. Weld is delivered as a hosted service, used through a web workspace.
Weld is operated by Weld Technologies ApS, a Danish company. According to the vendor, the service is hosted in the EU on AWS and Google Cloud, whose data centres are certified to SOC 2 and ISO 27001. Because the underlying infrastructure comes from US cloud providers, a European organisation should check the subprocessor list and the data processing agreement, both published by Weld. Weld reports an independent SOC 2 Type II audit, with the full report available under NDA. Weld is proprietary software and not open source.