ArcGIS Workflow Manager Server is scalable and accommodates both small and large deployments. When you first begin, you may start small and install all the components on a single machine. As you deploy your production site, or if your site needs to accommodate more users, you can add more Workflow Manager machines to the site.
Single-machine deployment
In a single-machine deployment, Workflow Manager is installed and federated on a single ArcGIS Server machine. This deployment scenario is straightforward to set up, maintain, and upgrade. It can support a sandbox environment for development and testing, but it is also a valid (and in some cases ideal) configuration for some production environments.
High-availability deployment
Workflow Manager can be configured as a highly available deployment to help ensure your organization meets system uptime requirements. Workflow Manager supports the configuration of a multiple-machine high-availability site, in which two or more Workflow Manager machines can be administered and used as a single logical unit.
A highly available Workflow Manager deployment can be configured with any supported highly available ArcGIS Enterprise deployment. ArcGIS Server must be installed but does not need to be licensed as a GIS server on the Workflow Manager machines. Once the Workflow Manager machines are set up, they must be configured for high availability in the Workflow Manager configuration file.
Note:
Workflow Manager cannot be deployed using a single-machine high-availability configuration.