Grayson also highlighted improvements in profitability and cash flow. Non-GAAP operating income for Q4 was $247 million, up 10% year over year, and non-GAAP operating margin was 29.5%, up 70 basis points. Full-year non-GAAP operating income was $968 million, up 9%, with operating margin reaching 30% for the first time. Free cash flow totaled more than $1 billion for the year, and was $350 million in Q4.CFO Blake Grayson added that subscription revenue in Q4 was $819 million, also up 8% year over year. For t ...