And then there's YouTube. The video platform that Google acquired in 2006 is expected to increase revenue 41 percent this year to $4.3 billion, according to eMarketer, as big brands attempt to reach the site's billion users.
"YouTube has a compelling pitch that is working with large brand advertisers and advertising agencies," Martin Pyykkonen, an analyst at Rosenblatt Securities, wrote in a report this month. "We think that YouTube gains market share from large-brand advertisers' spending."
Pyykkonen has a "buy" rating on the stock and $750 price target, 10 percent higher than Tuesday's closing price of $680.
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Analysts expect Alphabet to report third-quarter revenue growth of 12 percent from a year earlier to $18.5 billion, according to a survey from Thomson Reuters. Earnings per share likely increased to $5.77 from $4.09.
Not until the fourth quarter will Alphabet begin breaking out its separate units, so Wall Street will have to digest this week's report just as it has in the past.
Still, there are plenty of questions for Alphabet to answer, much of it surrounding the company's mobile efforts.