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.

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 spending, but even at 37% growth in the second quarter of 2026³ it is the slowest-growing of the big three⁴ — 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 2025⁵ and grew 26% to $19.8 billion in the second quarter of 2026⁶, making Amazon the third-largest digital advertising company on earth behind only Google and Meta⁷ — 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

$775.7B (12 months to June 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 Q2 2026 earnings 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

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 ↗
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 ↗
ReportedIn cloud, Amazon is the leader losing ground: AWS remains the largest at roughly 28% of infrastructure spending, but even at 37% growth in the second quarter of 2026 it is the slowest-growing of the big three — a dynamic serious enough that it appears separately as one of this company's two root threats.
Amazon.com, second-quarter 2026 results release (Form 8-K, Exhibit 99.1) — net sales $200.6B (+20%), operating income $27.5B (13.7% margin), AWS sales $42.2B (+37%, fastest growth in 18 quarters, $169B annualized run rate) and operating income $16.6B (39.4% margin, against 32.9% a year earlier), advertising $19.8B (+26%), online stores +15%, third-party seller services +16%, net income $62.6B including $53.4B of non-operating income primarily from investments in Anthropic, TTM operating cash flow $161.4B against net capital purchases $169.0B and free cash flow -$7.6B; AWS AI business and chips business each above a $25B run rate; Trainium commitments from Anthropic and OpenAI; Amazon Leo at nearly 400 satellites, enough to begin initial service this year; Zoox's NHTSA Part 555 exemption to charge for rides; Alexa+ triers signing up for Prime at a nearly 25% higher rate; supplemental table Q1 2025-Q2 2026 (WW shipping cost growth 3%, 6%, 8%, 10%, 14%, 19%; WW paid unit growth 8%, 12%, 11%, 12%, 15%, 17%; seller unit mix 60-62%; North America TTM operating margin 7.4%); Q3 2026 guidance of $197.0-202.0B net sales and $22.5-26.5B operating income, with growth nearly 400 basis points higher excluding Prime Day in both years — Q2 2026 — quarter ended June 30, 2026 · publ. July 30, 2026 · source ↗
Third-party estimateIn cloud, Amazon is the leader losing ground: AWS remains the largest at roughly 28% of infrastructure spending, but even at 37% growth in the second quarter of 2026 it is the slowest-growing of the big three — 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 ↗
ReportedIts advertising business reached $68.6 billion in 2025 and grew 26% to $19.8 billion in the second quarter of 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 ↗
ReportedIts advertising business reached $68.6 billion in 2025 and grew 26% to $19.8 billion in the second quarter of 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, second-quarter 2026 results release (Form 8-K, Exhibit 99.1) — net sales $200.6B (+20%), operating income $27.5B (13.7% margin), AWS sales $42.2B (+37%, fastest growth in 18 quarters, $169B annualized run rate) and operating income $16.6B (39.4% margin, against 32.9% a year earlier), advertising $19.8B (+26%), online stores +15%, third-party seller services +16%, net income $62.6B including $53.4B of non-operating income primarily from investments in Anthropic, TTM operating cash flow $161.4B against net capital purchases $169.0B and free cash flow -$7.6B; AWS AI business and chips business each above a $25B run rate; Trainium commitments from Anthropic and OpenAI; Amazon Leo at nearly 400 satellites, enough to begin initial service this year; Zoox's NHTSA Part 555 exemption to charge for rides; Alexa+ triers signing up for Prime at a nearly 25% higher rate; supplemental table Q1 2025-Q2 2026 (WW shipping cost growth 3%, 6%, 8%, 10%, 14%, 19%; WW paid unit growth 8%, 12%, 11%, 12%, 15%, 17%; seller unit mix 60-62%; North America TTM operating margin 7.4%); Q3 2026 guidance of $197.0-202.0B net sales and $22.5-26.5B operating income, with growth nearly 400 basis points higher excluding Prime Day in both years — Q2 2026 — quarter ended June 30, 2026 · publ. July 30, 2026 · source ↗
Third-party estimateIts advertising business reached $68.6 billion in 2025 and grew 26% to $19.8 billion in the second quarter of 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 September 22, 2026