Riddle of Alphabet’s ad revenue
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Alphabet reported decelerating advertising revenue for Google in the first
quarter of 2019, sending its stock plunging 7.5% and shaving more than $67 billion from its market capitalisation to $833.5 billion
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Alphabet revenue ($ millions) 
Google advertising revenue  ($ millions, as share of Alphabet revenue)

2015: Google changes its corporate name to Alphabet

37,905  46,039  55,519  66,001  74,989  90,272  110,855  136,819  36,339
36,530  43,690  51,070  59,620  67,390  79,380  95,340  116,320  30,720
 96%     95%     92%     90%     90%     88%     86%     85%     85%
2011     2012   2013     2014    2015    2016    2017    2018    2019 Q1

Headcount: Alphabet has seen employee numbers climb to 103,460, up more than 4,000 in year
YouTube: Alphabet blamed fall in clicks on ads based on videos watched on YouTube after company removed millions of harmful-content and fake news videos

Apple: Since 2017, Apple’s Intelligent Tracking Prevention has restricted ability for advertisers and site owners to track users across domains. ITP cut ad sales by around 50%
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Sources: Bloomberg, CNBC, IP Watchdog © GRAPHIC NEWS