# Supported Regions and DB engines for cross-Region read replicas in Amazon RDS
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By using cross-Region read replicas in Amazon RDS, you can create a MariaDB, MySQL, Oracle, PostgreSQL, SQL Server, or Db2 read replica in a different Region from the source DB instance. For more information about cross-Region read replicas, including source and destination Region considerations, see [Creating a read replica in a different AWS Region](USER_ReadRepl.XRgn.md).

**Topics**
+ [Cross-Region read replicas with RDS for MariaDB](#Concepts.RDS_Fea_Regions_DB-eng.Feature.CrossRegionReadReplicas.mdb)
+ [Cross-Region read replicas with RDS for MySQL](#Concepts.RDS_Fea_Regions_DB-eng.Feature.CrossRegionReadReplicas.my)
+ [Cross-Region read replicas with RDS for Oracle](#Concepts.RDS_Fea_Regions_DB-eng.Feature.CrossRegionReadReplicas.ora)
+ [Cross-Region read replicas with RDS for PostgreSQL](#Concepts.RDS_Fea_Regions_DB-eng.Feature.CrossRegionReadReplicas.pg)
+ [Cross-Region read replicas with RDS for SQL Server](#Concepts.RDS_Fea_Regions_DB-eng.Feature.CrossRegionReadReplicas.sq)
+ [Cross-Region read replicas with RDS for Db2](#Concepts.RDS_Fea_Regions_DB-eng.Feature.CrossRegionReadReplicas.db2)

## Cross-Region read replicas with RDS for MariaDB
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Cross-Region read replicas with RDS for MariaDB are available in all Regions for the following versions:
+ RDS for MariaDB 11.8 (All available versions)
+ RDS for MariaDB 11.4 (All available versions)
+ RDS for MariaDB 10.11 (All available versions)
+ RDS for MariaDB 10.6 (All available versions)
+ RDS for MariaDB 10.5 (All available versions)
+ RDS for MariaDB 10.4 (All available versions)

## Cross-Region read replicas with RDS for MySQL
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Cross-Region read replicas with RDS for MySQL are available in all Regions for the following versions:
+ RDS for MySQL 8.4 (All available versions)
+ RDS for MySQL 8.0 (All available versions)
+ RDS for MySQL 5.7 (All available versions)

## Cross-Region read replicas with RDS for Oracle
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Cross-Region read replicas for RDS for Oracle are available in all AWS Regions for all supported database versions using Enterprise Edition. Replicas are supported only in non-CDBs and in the single-tenant configuration of the CDB architecture. Cross-Region read replicas aren't supported in the multi-tenant configuration of the CDB architecture. 

For more information on additional requirements for cross-Region read replicas with RDS for Oracle, see [Requirements and considerations for RDS for Oracle replicas](oracle-read-replicas.limitations.md). 

## Cross-Region read replicas with RDS for PostgreSQL
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Cross-Region read replicas with RDS for PostgreSQL are available in all Regions for the following versions:
+ RDS for PostgreSQL 18 (All available versions)
+ RDS for PostgreSQL 17 (All available versions)
+ RDS for PostgreSQL 16 (All available versions)
+ RDS for PostgreSQL 15 (All available versions)
+ RDS for PostgreSQL 14 (All available versions)
+ RDS for PostgreSQL 13 (All available versions)
+ RDS for PostgreSQL 12 (All available versions)
+ RDS for PostgreSQL 11 (All available versions)
+ RDS for PostgreSQL 10 (All available versions)

## Cross-Region read replicas with RDS for SQL Server
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Cross-Region read replicas with RDS for SQL Server are available in all Regions for the following versions using Microsoft SQL Server Enterprise Edition:
+ RDS for SQL Server 2022
+ RDS for SQL Server 2019 (Version 15.00.4073.23 and higher)
+ RDS for SQL Server 2017 (Version 14.00.3281.6 and higher)
+ RDS for SQL Server 2016 (Version 13.00.6300.2 and higher)

## Cross-Region read replicas with RDS for Db2
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Cross-Region read replicas with RDS for Db2 are available in all Regions for the following versions:
+ RDS for Db2 11.5.9 (All available versions)