DATUM lets you build your own block templates with your own node, instead of trusting a pool to do it for you.
For the full walkthrough, see our DATUM Setup Guide.
If your node or DATUM Gateway ever goes offline, you don't want your miners sitting idle. Configure a backup/failover pool so they keep working until you're back up:
This is a failover only, not a primary connection — mining directly against it skips DATUM and gives up control of your block templates.