The 2019 edition of the EU Industrial R&D Investment Scoreboard rankings of the top 2,500 business research and development spenders in the world range from the top-ranked Alphabet — the parent company of Google — at €18.3bn to both Japanese and Chinese companies at ranks 2,499 and 2,500 with spending of €30.7m each. Ireland has 4 entries including 2 banks and another 22 mainly American firms that are technically "Irish" as they have headquarters in Ireland for tax avoidance purposes — this process is called a tax inversion. The total on the chart above should be 26 for Ireland (22 redomiciled companies and 4 Irish firms) as Dublin-based Pentair changed its headquarters to London when in 2017 it spun-out a new firm in Dublin, named nVent.
Amazon would have been in the first place had its annual report given a figure for R&D alone. Recode, the tech news service has reported that FactSet — a data service — estimated in 2018 that Amazon’s “technology and content” were its R&D expenditure, which in 2017 was at $22.6bn, 41% more than in 2016; $28.8bn in 2018, up 27.6% on 2017, and $37.3bn in 2019, up 24.6% on 2018.