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Amazon S3 to Amazon Redshift integration

Connect Amazon S3 to Amazon Redshift and automatically sync your cloud data warehouse data. Weld extracts data from Amazon S3, loads it into Amazon Redshift, and lets you transform the data using SQL or dbt, no custom scripts required.

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4.8 on G2
Amazon S3Source
WeldWeld
Amazon RedshiftWarehouse
Weld · New sync
Amazon S3SourceAmazon S3Connected
Tables to sync

Your own tables, picked when you set up the sync.

  • Extract
  • Load
  • Keep in sync
Amazon RedshiftDestinationAmazon RedshiftReady
aws_s3 schema
  • aws_s3.Synced
  • aws_s3.Syncing
  • aws_s3.Synced
  • aws_s3.Synced

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How it works

How to set up Amazon S3 to Amazon Redshift in Weld.
In the app, with the API or an agent.

Setup guideAPI guideMCP docs
Weld · New Amazon S3 sync
Amazon S3New connectionAmazon S3Authorised
Connection nameaws_s3
AuthorizeOpens Amazon S3 to grant read access
Use cases

Why sync Amazon S3 to Amazon Redshift?
Ready for analysis.

Centralizing your Amazon S3 data in Amazon Redshift lets you join it with other data sources for cross-platform analytics and deeper insights.

Build reliable dashboards and reports by querying Amazon S3 data directly in Amazon Redshift using SQL or your preferred BI tool.

  • Centralized data warehouse

    Bring Amazon S3 data into Amazon Redshift alongside other sources to create a single source of truth for your organization.

  • Automated reporting

    Replace manual exports and spreadsheet-based reporting with automated pipelines from Amazon S3 to Amazon Redshift. Connect BI tools like Looker, Metabase, or Power BI.

Data

What data can you sync?
From Amazon S3 to Amazon Redshift.

Weld syncs the objects the Amazon S3 connector exposes into Amazon Redshift, and you choose which tables and fields to include. The connector's docs list what is available.

    Weld MCP server

    Ask your agent.
    It queries Amazon Redshift for you.

    Connect Claude, Cursor, ChatGPT or your own agent to Weld over MCP. It reads the Amazon S3 context, finds the tables it needs and runs the query in Amazon Redshift.

    Set up the MCP serverClaudeCursorChatGPTGemini
    Claude CodeOpus 5
    >

    Which Amazon S3 tables do we have in Amazon Redshift, and which is the largest?

    Looking up what Weld has synced from Amazon S3.

    ●weld·search_available_references
    ⎿raw.aws_s3.*
    tables, columns and freshness
    ●weld·get_reference_schema
    ⎿columns, types and nullability
    ●weld·run_query
    ⎿select count(*) from {{raw.aws_s3.…}}
    submitted
    ●weld·get_query_status
    ⎿DONE
    ●weld·get_query_result
    ⎿rows returned
    ✓Answered from Amazon S3 data in Amazon Redshift
    >Ask about your Amazon S3 data
    Under the hood

    Technical considerations.
    What to expect.

    Incremental syncing
    Weld uses incremental syncing where supported by the Amazon S3 API, loading only new and updated records to minimize data transfer and warehouse costs.
    Schema handling
    Weld automatically manages schema changes. If Amazon S3 adds new fields, they're detected and added to the corresponding Amazon Redshift tables.
    Data freshness
    Sync frequency depends on your Weld plan. Most connectors support schedules from every 5 minutes up to daily intervals.
    Security
    All data is encrypted in transit (TLS) and at rest. Weld is SOC 2 Type II compliant and supports IP whitelisting for database connections.
    Resources

    Keep reading.
    Guides, docs and schema.

    Documentation

    Amazon S3 setup guide

    How to connect Amazon S3 to Weld, step by step.

    Documentation

    Amazon Redshift setup guide

    How to connect Amazon Redshift to Weld, step by step.

    Connector

    Amazon S3 connector

    Everything Weld does with Amazon S3.

    Connector

    Amazon Redshift connector

    Everything Weld does with Amazon Redshift.

    FAQ

    Common questions.
    About Amazon S3 to Amazon Redshift.

    Start syncing Amazon S3 to Amazon Redshift.

    Set up your Amazon S3 data pipeline in minutes. No credit card required. Free for 14 days.

    Amazon S3Source
    WeldWeld
    Amazon RedshiftWarehouse
    Start for freeTalk to us
    Related

    Related integrations.
    More with Amazon S3 and Amazon Redshift.

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