Syncthing, an open-source, decentralized file synchronization tool, provides a continuous, bidirectional sync alternatively that operates in real-time. Unlike OCI Functions, which rely on an event driven model for object replication, Syncthing synchronizes entire file structures efficiently between virtual machines (VMs) while supporting local and OCI Object Storage mounted directories.

In this tutorial, we will deploy Syncthing on OCI Compute instances across two regions using an OCI Resource Manager stack, enabling automatic, bidirectional synchronization between local VM storage and OCI Object Storage mounted directories.