https://www.cnbc.com/2019/02/04/alphabet-earnings-preview-q4-2018.html > Alphabet is set to report fourth-quarter earnings Monday. Investors will want to see strong advertising numbers amid threats from Amazon and rising costs to doing business. > Google, which makes up the vast majority of Alphabet's business, is increasingly seeing Amazon encroach into its core advdertising business. Revenue in Amazon's "Other" category — which the company says is "primarily" made up of ad sales — more than doubled from 2017 to 2018, coming in at $10.1 billion last year, according to financial filings. CNBC reported in October that some advertisers were moving as much as half their search budget from Google to Amazon.