Amazon's online advertising business earned over $12 billion during the second quarter, exceeding analysts' expectations and marking a 20% year-over-year increase. Amazon's online advertising unit is growing quickly but is still small relative to its core online retail business. Meta's revenue growth rate outpaced Google's ad business, with Alphabet reporting an 11% year-over-year increase in Google ad sales. Microsoft's search and news advertising sales grew by 19% yearly, though the company does not disclose specific revenue figures for this unit.