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⚠ The Lead NarrowsModerate threat

Amazon (AMZN) — threat to the moat

Azure and Google Cloud grow faster in percentage terms — first place erodes at the margin.

AWS invented the cloud and still leads it, but leads are measured at the margin, and at the margin the gap has been closing. Microsoft's Azure and Google Cloud have for several years grown faster in percentage terms than AWS1, chipping at its share of new workloads — Azure on the back of its enterprise relationships and its OpenAI partnership, Google on its data and AI research. In the crucial new arena of AI, all three are racing, and AWS no longer sets the pace unchallenged.

AWS sales growth year on year (%)15.8%Q1'2312.3%Q317.2%Q1'2419.1%Q316.9%Q1'2520.2%Q328.4%Q1'2639.0%Q3Amazon quarterly results releases (Form 8-K, Ex. 99.1), Q3 2026 supplemental table
Growth bottomed near 12% in 2023 and has more than tripled since, to 39% in the September quarter.

The danger is not that AWS shrinks but that it slips from dominant to merely first-among-equals. If rivals keep winning a disproportionate share of new AI workloads, AWS's growth premium erodes and, more importantly, so does the perception of inevitability that helps it win the next enterprise. Cloud is a game of momentum as much as scale, and momentum has lately favored the challengers.

AWS answered in 2026 by accelerating for six straight quarters, from 17% growth to 28% in the first quarter, 37% in the second and 39% in the third, its fastest in nearly five years2, as its own AI stack of Trainium chips and the Bedrock model platform began to bite, and its contracted backlog doubled in a year to $496 billion3. The market is also growing fast enough that all three giants can thrive at once; share loss and handsome growth are not mutually exclusive.

Put it at moderate. The percentage-growth gap is real and reflects genuine competitive pressure, particularly in AI, and a durable loss of momentum would matter to the profit engine — but AWS's re-acceleration shows the lead is being defended, not surrendered, and the pie is expanding fast enough to reward more than one winner.

References
  1. Third-party estimateMicrosoft's Azure and Google Cloud have for several years grown faster in percentage terms than AWS, chipping at its share of new workloads — Azure on the back of its enterprise relationships and its OpenAI partnership, Google on its data and AI research.
    Synergy Research / Canalys — cloud infrastructure share and growth (AWS ~30%; Azure and Google Cloud growing faster in percentage terms) — Recent quarters · publ. 2025-2026 · source ↗
  2. ReportedAWS answered in 2026 by accelerating for six straight quarters, from 17% growth to 28% in the first quarter, 37% in the second and 39% in the third, its fastest in nearly five years, as its own AI stack of Trainium chips and the Bedrock model platform began to bite, and its contracted backlog doubled in a year to $496 billion.
    Amazon.com, third-quarter 2026 results release (Form 8-K, Exhibit 99.1) - Supplemental Financial Information and Business Metrics, six quarters from Q2 2025 to Q3 2026. North America: net sales $100,068M, $106,267M, $127,083M, $104,143M, $116,177M and $112,852M, growth excluding currency 11%, 11%, 10%, 12%, 16% and 6%; operating income $7,517M, $4,789M, $11,472M, $8,267M, $9,123M and $8,723M; operating margin 7.5%, 4.5%, 9.0%, 7.9%, 7.9% and 7.7%; trailing-twelve-month net sales $404,078M, $414,808M, $426,305M, $437,561M, $453,670M and $460,255M, trailing operating income $28,277M, $27,403M, $29,619M, $32,045M, $33,651M and $37,585M, and trailing margin 7.0%, 6.6%, 6.9%, 7.3%, 7.4% and 8.2%. International: net sales $36,761M, $40,896M, $50,724M, $39,789M, $42,197M and $43,108M, growth excluding currency 11%, 10%, 11%, 11%, 15% and 8%; operating income $1,494M, $1,199M, $1,040M, $1,424M, $1,717M and $1,580M, with operating income growth excluding currency of 324%, (31)%, (45)%, 6%, 18% and 42%; trailing net sales $149,582M, $154,590M, $161,894M, $168,170M, $173,606M and $175,818M, trailing operating income $5,127M, $5,025M, $4,750M, $5,157M, $5,380M and $5,761M, and trailing margin 3.4%, 3.2%, 2.9%, 3.1%, 3.1% and 3.3%. AWS: net sales $30,873M, $33,006M, $35,579M, $37,587M, $42,232M and $45,984M, growth excluding currency 17%, 20%, 24%, 28%, 37% and 39%; operating income $10,160M, $11,434M, $12,465M, $14,161M, $16,621M and $17,773M; operating margin 32.9%, 34.6%, 35.0%, 37.7%, 39.4% and 38.7%; trailing net sales $116,378M to $161,382M and trailing operating income $42,786M to $61,020M. Net sales by product line: online stores $61,485M, $67,407M, $82,988M, $64,254M, $70,432M and $68,470M; advertising services $15,694M, $17,703M, $21,317M, $17,243M, $19,809M and $19,637M; subscription services $12,208M, $12,574M, $13,122M, $13,427M, $13,730M and $14,006M. Worldwide shipping costs $23,370M, $25,384M, $31,492M, $25,709M, $27,873M and $28,295M, growing 6%, 8%, 10%, 14%, 19% and 11% against worldwide paid-unit growth of 12%, 11%, 12%, 15%, 17% and 12% and a seller unit mix of 62%, 62%, 61%, 60%, 61% and 61%; employees 1,546,000 to 1,638,000. Trailing operating cash flow $121,137M to $168,300M, trailing purchases of property and equipment net of proceeds $102,953M to $210,657M, and trailing free cash flow $18,184M, $14,788M, $11,194M, $1,232M, $(7,604)M and $(42,357)M — Q2 2025 - Q3 2026 · publ. October 29, 2026 · source ↗
  3. ReportedAWS answered in 2026 by accelerating for six straight quarters, from 17% growth to 28% in the first quarter, 37% in the second and 39% in the third, its fastest in nearly five years, as its own AI stack of Trainium chips and the Bedrock model platform began to bite, and its contracted backlog doubled in a year to $496 billion.
    Amazon.com Inc., Form 10-Q for the quarter ended June 30, 2026 — purchases of property and equipment $54,208M in Q2 2026; remaining performance obligations of approximately $496 billion (weighted-average remaining life 6.4 years), after OpenAI expanded its existing $38.0 billion commitment by $100.0 billion over 8.0 years in Q1 2026 and Anthropic expanded its commitment by more than $100.0 billion over 10.0 years in Q2 2026; upward adjustments to private equity investments of $50.5 billion in Q2 2026 and $62.8 billion in the six months, primarily nonvoting preferred stock in Anthropic; about $640 million of IEEPA tariff refunds recorded mainly as a reduction to cost of sales; shipping costs $27.9 billion against $23.4 billion — Q2 2026 — quarter ended June 30, 2026 · publ. July 2026 · source ↗
Sources
Generated October 30, 2026