`services` in organizational hierarchy

I'm curious how our organizational hierarchy of applications (or services as defined in ECS) could be translated to ECS to provide some higher level views of what's going on throughout the enterprise.

- Business Unit - Company is comprised of ~12 different lines of business, think 'personal lines' and 'consumer lines'
- Asset - A collection of applications that comprise a system, each of these have an IT Manager and team associated with them, so typically the go-to place for determining who and how to contact when alerting
- Application - A 'service' as defined by ECS
- Environment - Collection of instantiations of the application; our assets have between 2-35 environments

Today, we capture a few as follows:

- _company.asset_
- _company.env_
- _company.appname_
- _company.asset-env-appname_