Working with the supported foreign data wrappers for Amazon RDS for PostgreSQL - Amazon Relational Database Service
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Working with the supported foreign data wrappers for Amazon RDS for PostgreSQL

A foreign data wrapper (FDW) is a specific type of extension that provides access to external data. For example, the oracle_fdw extension allows your RDS for PostgreSQL DB cluster to work with Oracle databases. As another example, by using the PostgreSQL native postgres_fdw extension you can access data stored in PostgreSQL DB instances external to your RDS for PostgreSQL DB instance.

Following, you can find information about several supported PostgreSQL foreign data wrappers.