The farm manager generates chargeable events that you can use to bill customers for usage of certain devices within their farm (for example, resource pool servers).
You can use commercially available billing systems to correlate events into usage records and charge customers based on these usage records.
You can compile a usage record using a commercially available reporting system and generate reports.
You can create your own custom billing tools. If you create your own billing tool, the definitions provided in this appendix will be useful.