# Active Replication Fabric User's Guide

> eXtremeDB Active Replication Fabric is McObject's implementation for data exchange between "Internet of Things" (IoT) edge devices and database storage on remote systems. IoT edge devices often collect data and transmit it to Gateway or Server systems for further analysis. Please see The IoT Challenges page for a clear understanding of the motivation for eXtremeDB Active Replication Fabric (ARF).

> The following topics explain the general principles of eXtremeDB Active Replication Fabric application design and implementation:

> Introduction | Introduction, Theory of Operation and Overview of eXtremeDB Active Replication Fabric
> ARF Applications | General instructions for implementing ARF (IoT) applications
> Optimizations | Techniques and tips for optimizing eXtremeDB Active Replication Fabric application performance