Revenue is the sum of revenue in a period across all customers. Revenue is an important KPI for usage/transaction based businesses. Since SaaSGrid does not track pro-rated subscriptions, revenue will equal MRR for monthly aggregation.
Revenue for month x = Sum of revenue for all customers in month x
Revenue differs from MRR/ARR for quarterly and annual aggregations since all months in the period are summed, rather than looking at the last month of the period.
Revenue for quarter x = Sum of revenue for the 3 months in quarter x