The MCollective engine can invoke many kinds of actions in parallel across any number of nodes.
Puppet Enterprise 2018.1 is the last release to support Marionette Collective, also known as MCollective. While PE 2018.1 remains supported, Puppet will continue to address security issues for MCollective. Feature development has been discontinued. Future releases of PE will not include MCollective. For more information, see the Puppet Enterprise support lifecycle.
To prepare for these changes, migrate your MCollective work to Puppet orchestrator to automate tasks and create consistent, repeatable administrative processes. Use orchestrator to automate your workflows and take advantage of its integration with Puppet Enterprise console and commands, APIs, role-based access control, and event tracking.