pre_text: Disaggregation of Revenues The nature, amount, timing and uncertainty of our revenue and how revenue and cash flows are affected by economic factors is most appropriately depicted by type of revenue as presented below (in thousands) and by geographic region as presented in Note 3
table: For the Year Ended December 31,
table: 2019 2018
table: Cloud and related solutions $896,164 $766,377
table: Software and services 52,364 58,101
table: Maintenance 48,282 50,581
table: Total revenues $996,810 $875,059
question: Analyse this data from a financial earnings document. What is the total revenue earned from 2018 to 2019?