Loved by data teams from around the world
EXTRACT
Connect your SaaS apps, ERPs, and databases with reliable, prebuilt connectors — and sync everything in one place.
Shopify
→ View connector
Salesforce
→ View connector
Quickbooks
→ View connector
HubSpot
→ View connector
Monday.com
→ View connector
Facebook Ads
→ View connector
Google Ads
→ View connector
PostgreSQL
→ View connector
Airtable
→ View connector
Amazon Selling Partner API
→ View connector
Klaviyo
→ View connector
Google Analytics 4
→ View connectorIncremental, full, and CDC replication from 300+ sources into your warehouse. Schema-aware, type-safe, and reliable by default.
Google BigQuery
Snowflake
DatabricksPostgreSQL
Amazon RedshiftLog-based CDC for PostgreSQL, MySQL, SQL Server and MongoDB. Capture inserts, updates and deletes in near real-time.
HubSpotHubSpot
Data source
Automatic schema migrations, CDC conflict resolution, and API versioning. Self-healing with exponential back-off retries.
Weld detects schema changes, manages API versioning, and prevents breaking updates automatically.
Duplicate detection, validation checks, and proactive alerts keep your pipelines clean and dependable.
Real-time monitoring plus automatic retries ensure pipelines recover fast and stay running.
hubspot_contacts
stripe_paymentssalesforce_leads
zendesk_tickets[auto] Schema change detected on stripe_payments
Write models in SQL with version control, CI checks, and DAG-based orchestration. Bring your own dbt project or use Weld's built-in workspace.
A modern SQL editor with version control, tests, scheduling and lineage from ingestion to reverse ETL.
Draft, refactor and validate queries with our AI assistant 
Ed
Connect any transform tool with unified scheduling, orchestration, logging and alerts.
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Activate warehouse models in CRMs, ad platforms, and internal tools. Row-level diffing, idempotent upserts, and configurable sync cadence.
Ship cleaned customer and product data into Salesforce, HubSpot, ad platforms and more so every team works from the same source of truth.
Build audiences, triggers and workflows on top of your warehouse models instead of fragile ad-hoc exports.
Centralized monitoring, logging and alerting keep your downstream syncs reliable and auditable.
dim_customers
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Full programmatic control over connections, syncs, and schedules via REST. Embed ELT pipelines directly into your product with a single API key.
White-label data ingestion so your customers can connect their own sources without exposing the Weld UI.
Programmatically create, configure and manage hundreds of syncs through clean, predictable REST endpoints.
Authenticate, create connections, add streams, enable scheduling and monitor status, all through a single API.
Feed structured data from any source into vector databases and LLM workflows, fully automated and always up to date.
▌BUILT FOR GLOBAL SCALE
Countries with active customers
Uptime across all sync operations
Daily syncs
Trillion records synced annually
Countries with active customers
Uptime across all sync operations
Daily syncs
Trillion records synced annually
SECURITY
WHITE PAPER
Our approach to security, compliance, and privacy — covering SOC 2, SOC 3, ISO 27001, HIPAA readiness, encryption practices, and governance.
Independent audit of security controls over time. Report available under NDA.
ISO 27001-certified infrastructure and ISMS practices.
HIPAA-ready processes and controls for PHI where applicable.
TLS 1.2+ in transit and strong encryption at rest.
SSO/MFA and role-based permissions with least privilege.
Privacy-first by design with EU data residency options.
FROM THE BLOG
The latest on data engineering, product updates, and customer stories.
This month, Weld added Amazon Redshift as a data warehouse destination, launched Reddit Ads, ShipHero, and Amazon Attribution connectors, overhauled Google Ads multi-account syncing, and migrated Amazon Selling Partner to private app authentication.
What are slowly changing dimensions (SCD)? Learn the different SCD types - Type 1, 2, 3, and 4 - understand when to use each, and see how history tables let you track every change in your data warehouse.
Using Weld can make it easy to sync data like ad performance, campaigns, and audience metrics. This integration helps track advertising trends, optimize campaigns, and manage marketing operations efficiently.
CUSTOMER STORIES
“One of the biggest impacts has been unlocking new ways to buy media. Before, we didn’t have the data to back up strategic decisions – now we do.”
“Before Weld, we had to rely on custom Python scripts and manual processes that were time-consuming and error-prone.”
“We’re still a team of three, but we’re often doing far more than the equivalent of three full-time employees. That’s down to how we're able to leverage systems, data, and processes.”
“We’ve always been a KPI-driven company. But we wanted to scale that mindset across every team member, every team, every decision.”
“Before Weld, our data infrastructure was limited and we relied heavily on Excel files and custom Python scripts.”
“Weld has saved us a ton of time, from not having data ready to having a fully functional data warehouse and connectors.”
“By integrating Weld, Amazon S3, and Databricks, Soundboks built a modern data pipeline that automates data ingestion, improves reporting, and provides up-to-date visibility into sales performance”
“We didn’t have a good data setup, so we lacked the business insights we needed. Weld has allowed us to set up a structured data infrastructure and access insights quickly.”
AWARD WINNING ETL PLATFORM
Spend less time managing data and more time getting real insights.