Which of these is NOT a method for integrating sync features in IT Glue?

In this context, the correct response indicates that integrating sync features in IT Glue does not typically include the method of using a combination of PSA (Professional Services Automation) and an external CRM (Customer Relationship Management) system. This is because IT Glue's primary intended integrations focus on syncing with either PSA or RMM (Remote Monitoring and Management) tools, or using them in conjunction, rather than combining these with an external CRM. The integration process is designed to streamline documentation and leverage existing workflows within established systems rather than introducing additional external layers that could complicate the sync processes.

The other methods listed—syncing solely with a PSA or RMM, or a specific arrangement where RMM syncs only organizations with the PSA—are viable options. They align with the integration capabilities provided by IT Glue, which aims to enhance efficiency by relying on tools specifically designed to work within the ecosystem of IT management software. Thus, these methods are recognized methods of integration, while the combination of PSA and an external CRM falls outside of the standard operational approach for IT Glue's sync features.