Core Insights - Amazon's sales increased by 14% in the fourth quarter, driven by strong holiday spending and better-than-expected growth in its cloud computing segment [1] - Despite the sales surge, Amazon's shares dropped by 11% in after-hours trading [1] Sales Performance - The 14% sales growth reflects robust consumer spending during the holiday season [1] - The cloud computing unit, a significant contributor to Amazon's revenue, showed unexpected growth, enhancing overall sales performance [1] Market Reaction - The decline of 11% in share price during after-hours trading indicates market concerns despite positive sales figures [1]