In Q4'25, Datadog's operating expenses reached a total of $756.94M USD, with R&D expenses at $417.93M USD and SG&A expenses at $339.02M USD, marking the highest quarterly figure in the observed period and reflecting accelerated investments in innovation and operations. From Q1'23 to Q4'25, both R&D and SG&A expenses exhibited a consistent upward trend, growing from $229.48M USD and $187.29M USD respectively to their Q4'25 peaks, with an overall compound annual growth rate exceeding 30% for the combined categories. R&D expenses showed particularly strong acceleration post-Q2'25, increasing by over 20% quarter-over-quarter in the final three periods, while SG&A followed a steadier rise with notable jumps in Q3'23 and Q2'25; this stacked bar chart highlights escalating cost pressures amid the company's expansion, though no periods of decline were observed.