In Q1'26, Amazon's total operating expenses reached $42.47B USD, with R&D expenses at $29.57B USD and SG&A expenses at $12.90B USD, reflecting a slight quarterly increase from Q4'25's $46.37B USD total driven primarily by R&D growth, while SG&A declined. Over the period from Q2'23 to Q1'26, operating expenses exhibited an overall upward trend, rising from $35.88B USD to $42.47B USD, with R&D expenses showing consistent growth from $21.93B USD to $29.57B USD amid investments in innovation, and SG&A fluctuating between $12.40B USD and $16.97B USD with seasonal peaks in Q4 quarters. Notable inflection points include a dip in both categories in Q1'24 and Q1'25, followed by accelerated R&D expansion post-Q2'25, underscoring Amazon's focus on long-term technological advancements despite variable administrative costs.