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Amazon S3 Tables is an AWS-native Iceberg catalog service that uses the REST protocol with AWS SigV4 authentication. You can use it with RisingWave when creating an Iceberg SOURCE, SINK, or CONNECTION (for internal Iceberg tables). Required REST parameters for S3 Tables:
ParameterDescriptionValue for S3 Tables
catalog.uriThe S3 Tables REST endpoint for your region.https://s3tables.<your-region>.amazonaws.com/iceberg
catalog.rest.signing_regionThe AWS region for signing requests.e.g., us-east-1
catalog.rest.signing_nameThe service name for signing requests.s3tables
catalog.rest.sigv4_enabledEnables SigV4 signing. Must be true.true
For a complete list of all catalog-related parameters, see the main Catalog configuration page. Example CREATE SINK with S3 Tables: 
CREATE SINK my_s3_tables_sink FROM my_mv
WITH (
    connector = 'iceberg',
    type = 'upsert',
    primary_key = 'id',
    warehouse.path = 'arn:aws:s3tables:<your-region>:<account-id>:bucket/<bucket-name>',
    s3.access.key = '...',
    s3.secret.key = '...',
    s3.region = '<your-region>',
    catalog.type = 'rest',
    catalog.uri = 'https://s3tables.<your-region>.amazonaws.com/iceberg',
    catalog.rest.signing_region = '<your-region>',
    catalog.rest.sigv4_enabled = true,
    catalog.rest.signing_name = 's3tables',
    database.name = '<your-database-name>',
    table.name = '<your-table-name>'
);