Q1 2018Q4 2017Q3 2017Q2 2017Q1 2017
Total revenues (MM)$51,042.0$60,453.0$43,744.0$37,955.0$35,714.0
Total revenue growth42.9%38.2%33.7%24.8%22.6%
Retail store sales (MM)$4,263.0$4,522.0$1,276.0N/AN/A
Retail store sales growthN/AN/AN/AN/AN/A
Ecommerce sales (MM)$26,939.0$35,383.0$26,392.0$23,754.0$22,826.0
Ecommerce sales growth18.0%19.7%22.2%16.6%14.6%
Ecommerce sales % of total revenue52.8%58.5%60.3%62.6%63.9%
Other revenues (MM)$19,840.0$20,548.0$16,076.0$14,201.0$12,888.0
Other revenue growth53.9%44.8%44.5%41.6%39.9%

Notes:Other revenues includes third-party seller fees earned (including commissions) and related shipping fees, digital content subscriptions, and sales from non-retail activities, such as Amazon Web Services (AWS) sales, advertising services and co-branded credit card agreements; AWS sales were $19.3 billion, $17.5 billion, $12.2 billion, $7.9 billion, $4.6 billion, and $3.1 billion, during TTM, FY 2017, FY 2016, FY 2015, FY 2014, and FY 2013, respectively.