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.