Their gross margins are probably what you want to look at instead, since their cost of revenue won't include R&D ($ in 1,000s):
FY13 FY14 FY15 Gross revenue 148,512 215,109 319,521 Gross profit 115,481 117,123 266,589 Gross margin 77.7% 54.4% 83.4%
R&D as % of Revenue by year:
2013 39%
2014 37%
2015 44%
The marketing and sales expense goes from 13% to 21% of revenue in 2015
The growth in these line items really compress their margins in 2015.
Their gross margins are probably what you want to look at instead, since their cost of revenue won't include R&D ($ in 1,000s):
These are very healthy for a software company. They nearly doubled their spend on sales and marketing between FY13 and FY14, which explains the temporary dip in gross margin in FY14.