- or poor mans integration?
Sometimes you need to integrate to other systems in the organisation. And the ways of doing it always matters on which interfaces/skills/tools are at hand - but also whether you need a tight dependency and if you want or can customized anything on that client.
In the below example I will just illustrate how a standard Microsoft Dynamics 2016 CRM "Lookup Up Record" dialog can be used to link some other data/application that has interest in the CRM data - so that doing BI across systems might be more fun.