Simple definition
OpenTofu is an open-source Infrastructure as Code tool for provisioning resources using declarative configuration and tracked state.
Purpose and use
OpenTofu manages infrastructure resources using declarative configuration and providers for target platforms.
How does it work?
A plan compares configuration with observed and tracked state; applying it performs selected operations through providers.
Example and verification
Before approving a plan, inspect resource replacements, dependencies and the team's state backend.
Points to watch
State can contain sensitive information. Marking a displayed value as sensitive does not remove the need to protect related files, access and backups.
In short
Repeatability requires consistent management of versions, state and platform permissions.