# SAP NetWeaver on Amazon: high availability configuration for Netweaver (ASCS)
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This topic applies to SAP with high availability and update services operating system for SAP NetWeaver applications on Amazon cloud. It covers the instructions for configuration of a pacemaker cluster for the ABAP SAP Central Service (ASCS) and the Enqueue Replication Server (ERS) when deployed on Amazon EC2 instances in two different Availability Zones within an Amazon Region.

**Topics**
+ [SAP NetWeaver on Amazon: high availability configuration for SUSE Linux Enterprise Server (SLES) for SAP applications](sap-nw-on-aws-sles-pacemaker.md)
+ [SAP NetWeaver on Amazon: high availability configuration for Red Hat Enterprise Linux (RHEL) for SAP applications](sap-nw-on-aws-rhel-pacemaker.md)