Amazon.com spent more than $13.6 billion on technology in 2018, making it the biggest corporate IT spender in the world, according to new research from International Data Corp (IDC). Alphabet, Google's parent, and Walmart, came in at No. 2 and No. 3, respectively with each spending nearly $12 billion last year. IDC data suggests the top 10 companies accounted for 7% of the estimated $1.1 trillion spent by the 4,800 firms IDC tracks.