We use the following categories to classify the metric.
1.`Operational`: Required data for operational purposes.
1.`Optional`: Data that is optional to collect. This can be [enabled/disabled](https://docs.gitlab.com/ee/development/usage_ping/#disable-usage-ping) admin settings.
1.`Optional`: Data that is optional to collect. This can be [enabled/disabled](index#disable-usage-ping) admin settings.
1.`Subscription`: Data related to licensing.
1.`Standard`: Standard set of identifiers that are included when collecting data.
