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CompetitorsWide moat

Amazon (AMZN) — moat facet

Amazon is four companies wearing one ticker, so no single rival fights it on the same ground twice — Walmart pressures retail without touching AWS, Microsoft the reverse.

Amazon is really four companies wearing one ticker, so it has four separate competitive positions rather than one. Reading them together is the only way the picture makes sense.

Four businesses, four scoreboardsRetail vs WalmartAmazon stores $636B vs Walmart $713BMarketplace vs Temu3P fees $188B; sellers 61% of unitsCloud vs Azure, GoogleAWS +39%, Azure +48%, Google Cloud +103%Ads vs Google, Meta$78.0B over twelve months, +11% in Q3Amazon Q3 2026 release (trailing twelve months); Walmart FY2026; Microsoft and Alphabet Q3 2026
Against Walmart Amazon is the smaller store, against Azure and Google the slowest-growing cloud; in advertising it is the attacker.

In retail its oldest rival is still, by revenue, slightly larger: Walmart turned over roughly $713 billion in its fiscal 2026 against Amazon's $717 billion1 — near-identical scale, achieved in almost opposite ways. But online the gap is enormous: Amazon holds something like 38% of American e-commerce against Walmart's 6%2, even as Walmart's online sales grew about 24% and extended a long run of double-digit quarters. In the marketplace the pressure comes from beneath, where Temu and Shein sell directly from Chinese factories at prices Amazon's own sellers struggle to match. In cloud, Amazon is the leader losing ground: AWS remains the largest at roughly 28% of infrastructure spending3, but even at 39% growth in the third quarter of 20264 it is the slowest-growing of the big three, against Azure's 48%5 and Google Cloud's 103%6 — a dynamic serious enough that it appears separately as one of this company's two root threats.

The fourth position is the one where Amazon is the aggressor. Its advertising business reached $68.6 billion in 20257 and $78.0 billion over the twelve months to September 20268, making Amazon the third-largest digital advertising company on earth behind only Google and Meta9 — built on the buying intent Google used to monetise, and sold largely to the sellers already on Amazon's own shelves.

The pattern worth noticing is that Amazon's rivals rarely threaten the whole company. Walmart pressures retail without touching AWS; Microsoft pressures AWS without touching retail. That is the conglomerate's quiet advantage: no single competitor fights on the same ground twice.

Moat trajectory: Holding steady

Four competitive positions moving in different directions roughly cancel out: advertising is taking share from Google and Meta, retail is holding a six-to-one online lead over Walmart, while AWS keeps losing relative ground and the marketplace faces genuine price pressure from below. The conglomerate's protection is that no rival attacks more than one of these at a time.

The number that tests this moat
Reported
Amazon's revenue against Walmart's
$797.5B (12 months to September 2026) vs $713.2B (Walmart FY2026)

The two largest retailers are within a tenth of each other, reached from opposite ends. Walmart growing its online business faster than Amazon grows its store would be the rivalry turning.

Source: Amazon Q3 2026 results release; Walmart Form 10-K FY2026 ↗
Dig deeper
DIG DEEPER 01
Walmart: The Rival That Was Always Bigger
Nearly identical revenue, opposite shapes — and Walmart isn't trying to be Amazon, it's copying the parts of Amazon that make money.
DIG DEEPER 02
Temu, Shein and the Price Floor
Matching factory-direct prices means surrendering the fee structure that makes the marketplace profitable — which is the whole difficulty.
DIG DEEPER 03
Microsoft and Google: The Cloud Lead That Keeps Shrinking
Biggest and slowest is an uncomfortable combination: the lead shrinks every quarter even when AWS has a good one.
DIG DEEPER 04
Google and Meta: The Ad Business Amazon Built on Their Turf
Google infers intent, Meta infers behaviour, Amazon watches a shopper with a wallet out — and can prove the sale afterwards.
References
  1. Third-party estimateIn retail its oldest rival is still, by revenue, slightly larger: Walmart turned over roughly $713 billion in its fiscal 2026 against Amazon's $717 billion — near-identical scale, achieved in almost opposite ways.
    Walmart FY2026 results / market statistics — Walmart revenue ~$713.16B (+4.7%) against Amazon's ~$716.9B; Walmart global e-commerce sales ~$150.4B (+24%), a 15th consecutive quarter of double-digit e-commerce growth; Walmart Connect advertising ~$6.4B (+46%) — FY2026 · publ. 2026 · source ↗
  2. Third-party estimateBut online the gap is enormous: Amazon holds something like 38% of American e-commerce against Walmart's 6%, even as Walmart's online sales grew about 24% and extended a long run of double-digit quarters.
    U.S. e-commerce market share estimates — Amazon ~37.8% of U.S. e-commerce against Walmart ~6.3% — 2026 · publ. 2026 · source ↗
  3. Third-party estimateIn cloud, Amazon is the leader losing ground: AWS remains the largest at roughly 28% of infrastructure spending, but even at 39% growth in the third quarter of 2026 it is the slowest-growing of the big three, against Azure's 48% and Google Cloud's 103% — a dynamic serious enough that it appears separately as one of this company's two root threats.
    Synergy Research / market share data — Q2 2026 global cloud infrastructure: AWS ~28%, Azure ~21%, Google Cloud ~15%; AWS growing ~28% against Azure ~40% and Google Cloud far faster — Q2 2026 · publ. 2026 · source ↗
  4. ReportedIn cloud, Amazon is the leader losing ground: AWS remains the largest at roughly 28% of infrastructure spending, but even at 39% growth in the third quarter of 2026 it is the slowest-growing of the big three, against Azure's 48% and Google Cloud's 103% — a dynamic serious enough that it appears separately as one of this company's two root threats.
    Amazon.com, third-quarter 2026 results release (Form 8-K, Exhibit 99.1) — net sales $201,944M (+12%, +13% excluding a $0.9B unfavorable foreign-exchange impact), operating income $28,076M (+61%) at a 13.9% operating margin, described in the release's own headline as Amazon's highest operating margin ever; net income $20,685M and diluted EPS $1.89, both lower than the $21,187M and $1.95 of third quarter 2025, which the release attributes primarily to $9.5B of pre-tax gains on the investments in Anthropic recorded in that earlier quarter; total non-operating expense of $1,207M in the quarter (interest income $1,187M, interest expense $1,691M against $538M, other expense $703M) against non-operating income of $10,748M a year earlier; segment results North America net sales $112,852M (+6%) and operating income $8,723M (7.7% margin against 4.5%), International $43,108M (+5%, +8% excluding currency) and $1,580M (3.7% against 2.9%, +42% excluding currency), AWS $45,984M (+39%, its fastest growth in nearly five years, a $184 billion annualised revenue run rate) and $17,773M (38.7% margin against 34.6%); net sales mix North America 56%, International 21%, AWS 23%; the Prime Day timing shift, with the event in the second quarter this year for most large countries and entirely in the third quarter in 2025, without which third-quarter growth would have been approximately 400 basis points higher; net sales by product line online stores $68,470M (+2%), third-party seller services $46,492M (+9%, +10% excluding currency), advertising services $19,637M (+11%, +12% excluding currency, after 22% excluding currency in each of Q2 2025, Q3 2025, Q4 2025 and Q1 2026 and 26% in Q2 2026), subscription services $14,006M (+11%), physical stores $5,710M, other $1,645M; worldwide shipping costs $28,295M (+11%) against worldwide paid unit growth of 12% and a seller unit mix of 61%; employees 1,638,000 (+4%); trailing-twelve-month net sales $797,455M, operating income $104,366M at a 13.1% margin, net income $134,779M and diluted EPS $12.37, operating cash flow $168,300M (+29%), purchases of property and equipment net of proceeds $210,657M (+82%) and free cash flow of minus $42,357M against plus $14,788M a year earlier, with the supplemental table's trailing free-cash-flow series $18,184M, $14,788M, $11,194M, $1,232M, minus $7,604M and minus $42,357M for Q2 2025 to Q3 2026 and North America's trailing operating margin at 8.2%; purchases of property and equipment of $77,259M in the quarter and $175,670M in nine months; nine-month other income of $68,359M and a $78,788M pre-tax change in net unrealized gains on available-for-sale debt securities recorded in other comprehensive income; proceeds from long-term debt of $48,102M in the quarter and $115,100M in nine months, taking long-term debt from $65,648M at December 31, 2025 to $173,125M, total assets from $818,042M to $1,243,390M and other assets from $122,607M to $358,775M; Andy Jassy's statement of projected AWS revenue growth rates “of over 40% both in 2027 and in 2028”; and fourth-quarter 2026 guidance of $240.0-247.0B of net sales (+12% to +16%) and $28.5-33.5B of operating income against $25.0B, with 2026 cash capital expenditures still expected to be approximately $220 billion and fourth-quarter advertising revenue expected to grow in the high teens — Q3 2026 — quarter ended September 30, 2026 · publ. October 29, 2026 · source ↗
  5. ReportedIn cloud, Amazon is the leader losing ground: AWS remains the largest at roughly 28% of infrastructure spending, but even at 39% growth in the third quarter of 2026 it is the slowest-growing of the big three, against Azure's 48% and Google Cloud's 103% — a dynamic serious enough that it appears separately as one of this company's two root threats.
    Microsoft Form 10-Q for the quarter ended September 30, 2026 - revenue by significant product and service offering: Azure $33,165M against $22,384M, Microsoft 365 cloud $27,778M, Windows OEM and devices $3,551M, total $92,279M. — Q1 FY2027 · publ. 2026-10-29 · source ↗
  6. ReportedIn cloud, Amazon is the leader losing ground: AWS remains the largest at roughly 28% of infrastructure spending, but even at 39% growth in the third quarter of 2026 it is the slowest-growing of the big three, against Azure's 48% and Google Cloud's 103% — a dynamic serious enough that it appears separately as one of this company's two root threats.
    Alphabet Q3 2026 earnings release (Form 8-K exhibit 99.1) - quarter ended September 30, 2026: revenue $127,577M (+25%), operating income $40,576M (+30%), operating margin 31.8%; other income (expense), net $(8,221)M including a net loss on equity securities of $(8,664)M, whose footnote states the loss cut net income by $6.7 billion and diluted EPS by $0.55; net income available to common stockholders $26,170M and diluted EPS $2.12 against $34,979M and $2.87; Google Search and other $63,350M (+12%), YouTube ads $11,207M, Google Cloud $30,709M (+103%); segment operating income Google Services $39,157M, Google Cloud $11,121M, Other Bets $(2,047)M, Alphabet-level activities $(7,655)M against $(4,467)M — Q3 2026 - quarter ended Sep 30, 2026 · publ. Oct 28, 2026 · source ↗
  7. ReportedIts advertising business reached $68.6 billion in 2025 and $78.0 billion over the twelve months to September 2026, making Amazon the third-largest digital advertising company on earth behind only Google and Meta — built on the buying intent Google used to monetise, and sold largely to the sellers already on Amazon's own shelves.
    Amazon.com Inc., Form 10-K, FY2025 — segment results (net sales North America $426,305M, International $161,894M, AWS $128,725M; operating income $29,619M, $4,750M and $45,606M of a consolidated $79,975M, against $24,967M, $3,792M and $39,834M of $68,593M in 2024), net sales by product line (online stores $269,287M, physical stores $22,561M, third-party seller services $172,162M, advertising services $68,635M, subscription services $49,619M, AWS $128,725M, other $5,935M), net income $77,670M, and 2025 charges of $2.5 billion recorded in Q3 2025 primarily related to the settlement of a lawsuit with the Federal Trade Commission — Fiscal year ended December 31, 2025 · publ. February 2026 · source ↗
  8. Moat Explorer calcIts advertising business reached $68.6 billion in 2025 and $78.0 billion over the twelve months to September 2026, making Amazon the third-largest digital advertising company on earth behind only Google and Meta — built on the buying intent Google used to monetise, and sold largely to the sellers already on Amazon's own shelves.
    Moat Explorer calculation from the advertising-services line of Amazon's third-quarter 2026 supplemental table: $21,317M (Q4 2025) + $17,243M (Q1 2026) + $19,809M (Q2 2026) + $19,637M (Q3 2026) = $78,006M over the twelve months to September 2026; the September quarter's $19,637M grew 11% as reported and 12% excluding currency, after 26% excluding currency in the June quarter and 22% in each of the four quarters before it — Q4 2025 - Q3 2026 · publ. 2026 · source ↗
  9. Third-party estimateIts advertising business reached $68.6 billion in 2025 and $78.0 billion over the twelve months to September 2026, making Amazon the third-largest digital advertising company on earth behind only Google and Meta — built on the buying intent Google used to monetise, and sold largely to the sellers already on Amazon's own shelves.
    Amazon advertising revenue and market position — ~$68.6B in FY2025, running above $80B annualised on ~$19.8B quarterly (+26%); third-largest digital advertising company globally behind Google and Meta, ~11% of global digital ad spending — 2025-2026 · publ. 2026 · source ↗
Sources
Generated October 30, 2026