Abstract: Templated document stream integration of checklist data includes loading different checklist templates for a generic endpoint in a computing infrastructure, each containing partially filed data and each corresponding to a different security policy hardening the generic endpoint from a cyberthreat. Specific endpoints are then selected in the computing infrastructure and, for each corresponding specific endpoint, a set of checklists generated, each checklist in the set deriving from a different checklist template and including the partially filled data of one of the different checklist templates. Further, remediation data stored in a data store of an enterprise application is merged into each one of the generated checklists in the set. Finally, the enterprise application is updated with respect to the corresponding one of the selected specific endpoints with the different checklists merging the partially filled data and the remediation data.