Trending E-Commerce Giants, Amazon,Walmart,Carvana,Build.com, Products, Services, Comparisons, Countries of Operation & Everything You Need to Know

Introduction: The E-Commerce Boom Is Reshaping How the World Shops

We are living through the most dramatic transformation in retail history. Global e-commerce revenues are projected to surpass $5 trillion for the first time in 2026, and the companies driving this revolution are no longer just competing on price — they are competing on delivery speed, artificial intelligence, ecosystem breadth, and the ability to serve every conceivable consumer need.

In this comprehensive guide, we examine four of the most talked-about and hype-worthy e-commerce companies of 2025: Amazon, Walmart, Carvana, and Build.com. Each occupies a distinct corner of the digital commerce landscape — from the all-encompassing everything store, to the world’s largest brick-and-mortar giant going digital, to the disruptive online used-car dealer, to the largest specialized home improvement platform. Understanding what each offers, where they operate, and how they compare will help you as a consumer, investor, or entrepreneur make smarter decisions in today’s digital economy.

📊 Key Stat — Global ecommerce marketplaces are projected to generate 87% of all global ecommerce revenues in 2026, up from 86% in 2025, confirming the dominance of platform-based retailing.

PART 1

Amazon — The Everything Store That Powers the Internet

Company	Amazon.com, Inc.
Founded	1994, by Jeff Bezos in Seattle, WA
HQ	Seattle, Washington, USA
CEO	Andy Jassy (CEO since 2021)
Revenue	$716.9 billion total revenue (2025) | Net profit: $77.6 billion
Markets	20+ countries with direct marketplaces; ships to 100+ countries

What Is Amazon?

Amazon began in 1994 as an online bookstore operating out of Jeff Bezos’s garage in Seattle. In just three decades, it has grown into the most powerful retail and technology conglomerate in human history — a company whose reach now touches cloud computing, streaming entertainment, artificial intelligence, logistics, advertising, healthcare, and grocery delivery, in addition to its foundational e-commerce business.

Amazon’s online store generated the largest share of its 2025 revenue. The North America segment alone brought in $426.3 billion, growing 10% year over year. Its international segment added $161.9 billion (up 13%), while Amazon Web Services (AWS) — the company’s cloud computing division — delivered $128.7 billion, growing 20% year over year. Total net profit reached $77.6 billion in 2025, a massive increase year over year.

Amazon’s Core Products & Services

Product / Service	Description
Amazon Marketplace	The online storefront hosting over 600 million products from both Amazon’s own inventory (1P, 34% of GMV) and over 9.7 million third-party sellers (3P, 66% of GMV).
Amazon Prime	Subscription service with 260 million members worldwide (185 million in the US). Benefits include free same-day/next-day delivery, Prime Video, Prime Music, Prime Reading, and exclusive deals.
Amazon Web Services (AWS)	The world’s leading cloud computing platform, powering businesses, governments, and startups globally. Contributed $128.7B in 2025 revenue with a 20% YoY growth rate.
Amazon Advertising	A $68.5 billion (2025) advertising business enabling brands to reach shoppers via sponsored products, display ads, and streaming video ads. Grew 21.8% year over year.
Amazon Logistics (FBA)	Fulfillment by Amazon allows third-party sellers to store, pack, and ship products using Amazon’s global fulfillment network. Delivered nearly 70% more same-day items in 2025 vs 2024 in the US.
Amazon Haul	Amazon’s answer to Temu and Shein — a budget shopping channel offering over 1 million items under $10. Expanded to 25+ countries and regions.
Prime Video	Streaming service with 240 million users in 2025. Amazon spent $22.4 billion on original and licensed content.
Amazon Fresh / Whole Foods	Grocery delivery and physical grocery stores, with rapid same-day delivery expansion through Amazon Fresh and its Whole Foods Market chain.
Alexa & Smart Devices	Voice-controlled AI assistant (Alexa), Kindle e-readers, Echo smart speakers, Fire TV, and Ring smart home security devices.
Amazon Business	A B2B marketplace serving enterprise customers, offering bulk purchasing, business pricing, and procurement integration.
Amazon Pharmacy	An online prescription drug service offering significant discounts for Prime members, disrupting traditional pharmacy retail.

Countries Where Amazon Operates

Amazon directly operates marketplaces in the United States, Canada, Mexico, United Kingdom, Germany, France, Italy, Spain, the Netherlands, Poland, Sweden, Belgium, Australia, Japan, India, Singapore, the UAE, Saudi Arabia, Egypt, Brazil, and Turkey. It ships products to over 100 countries. The US is Amazon’s largest market, generating approximately 51% of total revenues in 2025. Japan is the fourth-largest market globally with $27.4 billion in revenue and 600 million monthly visitors. India is one of the most strategic long-term markets, where Amazon competes aggressively with Walmart-owned Flipkart.

⚡ Amazon in 2025 — Amazon Prime set a new company record for same- and next-day delivery. The company’s AI assistant Rufus is now integrated directly into the shopping experience, helping customers discover products through natural language conversation.

PART 2

Walmart — The World’s Largest Retailer Goes Digital

Company	Walmart Inc.
Founded	1945, by Sam Walton in Rogers, Arkansas
HQ	Bentonville, Arkansas, USA
CEO	Doug McMillon (President & CEO)
Revenue	$681 billion total revenue (Fiscal 2025) | Ecommerce: ~$150B+ (FY2026)
Markets	18+ countries internationally; 4,600+ US stores as fulfillment hubs

What Is Walmart?

Walmart is the world’s largest company by revenue and the largest retailer on earth, with a history spanning eight decades and a physical footprint that covers 18+ countries. What was once purely a brick-and-mortar discount retailer has undergone a radical digital transformation that is now reshaping global ecommerce. Walmart’s ecommerce operations exceeded $150 billion in sales for the first time in its fiscal year 2026, growing 27% year over year in Q4 alone — the 15th consecutive quarter of at least 10% annual ecommerce growth.

Walmart’s secret weapon is its physical scale. With over 4,600 stores in the US serving as fulfillment hubs, Walmart can now offer same-day delivery to 93% of American households — a capability that most pure-play ecommerce rivals cannot match. Its Walmart+ membership program, its advertising business (Walmart Connect, which grew 41% in the US in Q4), and its AI-powered shopping assistant Sparky are all accelerating digital momentum. Ecommerce now accounts for approximately 23% of all Walmart sales globally.

Walmart’s Core Products & Services

Product / Service	Description
Walmart.com Marketplace	An online marketplace hosting over 160,000 active third-party sellers, with 34% GMV growth in Q4 FY2025. Shoppers can access millions of products across all categories.
Walmart+	Walmart’s subscription membership program competing directly with Amazon Prime. Benefits include free shipping, free grocery delivery, fuel discounts, Paramount+ streaming, and early access to deals.
Grocery Delivery & Pickup	Walmart’s fastest-growing category. Store-fulfilled delivery grew nearly 50% in recent quarters. Now delivering to 93% of US households same-day, with Express delivery (under 3 hours) available.
Walmart Advertising (Connect)	A $6.4 billion (2025) retail media business. Walmart Connect grew 41% in the US in Q4 FY2026. Third-party marketplace sellers are the fastest-growing advertiser segment.
Sam’s Club	Warehouse membership retail club with 24% ecommerce sales growth, including triple-digit growth in club-fulfilled delivery.
Walmart Fulfillment Services (WFS)	A Fulfillment by Amazon-competitor allowing marketplace sellers to store and ship products via Walmart’s logistics network.
Sparky AI Assistant	Walmart’s agentic AI shopping assistant. Customers who engage with Sparky show 35%+ higher average order values. Built in partnership with OpenAI and Alphabet/Google.
Flipkart (India)	Majority-owned (77%) ecommerce giant in India serving 500+ million registered users across 80+ product categories. Includes Myntra (fashion) and Flipkart Minutes (quick commerce in under 15 min).
Walmex	Walmart’s Mexico and Central America division, one of the leading ecommerce growth markets in its international portfolio.
PharmacyHealth	In-store and online pharmacy services offering prescription management, telehealth, and health screening services.
Financial Services	Walmart MoneyCenter, Walmart Pay, and investments in embedded financial products for underbanked consumers.

Countries Where Walmart Operates

Walmart operates in 18+ countries outside the United States, including Canada, Mexico (Walmex — its largest international market), Chile, Brazil, India (via Flipkart), China, Japan, South Africa, Argentina, Costa Rica, El Salvador, Guatemala, Honduras, and Nicaragua. In China, ecommerce now represents more than half of total Walmart China sales, growing 28% in Q4 FY2026. Walmart International’s sales were led by China, Walmex, and Flipkart in recent quarters.

⚡ Walmart in 2025 — Walmart reached a historic milestone: its first profitable quarter for ecommerce operations both in the US and globally. The company now delivers 35% of store-fulfilled US orders in less than three hours.

PART 3

Carvana — The Online Used-Car Dealer Disrupting Auto Retail

Company	Carvana Co. (NYSE: CVNA)
Founded	2012, by Ernie Garcia III in Phoenix, Arizona
HQ	Phoenix, Arizona, USA
CEO	Ernie Garcia III (CEO)
Revenue	$13B+ revenue (2024) | Q3 2025 revenue: $5.65B (up 54.5% YoY)
Markets	United States only (nationwide, with iconic car vending machines)

What Is Carvana?

Carvana is the most disruptive force to hit the traditional automotive dealership model in decades. Founded in 2012 and headquartered in Phoenix, Arizona, Carvana operates as a 100% online used-car retailer — there are no physical showrooms, no salespeople commissions, and no negotiation required. Customers browse, select, finance, and purchase vehicles entirely through the Carvana website or app, with delivery to their home or pickup from one of Carvana’s now-iconic glass car vending machine towers located in cities across the US.

The company’s business model centers on buying used vehicles from consumers, dealers, and auctions, reconditioning them at its own Inspection and Reconditioning Centers (IRCs), and reselling them online at fixed, no-haggle prices with a 7-day test-own return guarantee. In Q3 2025, Carvana reported revenue of $5.65 billion — a 54.5% year-over-year increase — beating analyst expectations by a significant margin. The company’s gross profit per unit (GPU) has expanded to the $6,000–$7,000+ range, reflecting dramatically improved operational efficiency.

Carvana’s Core Products & Services

Product / Service	Description
Used Car Online Retail	Buy from a catalog of thousands of inspected, reconditioned used vehicles. Fixed, no-haggle pricing. Full 360-degree photos and detailed vehicle reports available online.
Home Delivery	Carvana delivers your purchased vehicle directly to your home or office in many US markets, including same-day delivery in select cities.
Car Vending Machines	Carvana’s signature branded car towers in select US cities where customers can pick up their vehicle by inserting a custom Carvana coin — a unique, memorable retail experience.
7-Day Test-Own Guarantee	Every vehicle comes with a 7-day return window. If you are not satisfied for any reason, return the car for a full refund, no questions asked.
Integrated Auto Financing	Carvana originates auto loans at competitive rates and sells them to third-party investors (gain-on-sale). Finance & Insurance (F&I) revenue is a high-margin revenue stream.
Vehicle Service Contracts (VSCs)	Extended warranty and protection plans bundled into the purchase process. Gap insurance and other ancillary products are also available.
Sell / Trade-In Your Car	Customers can get an instant cash offer for their current vehicle online in minutes. Carvana will pick up the car directly from their home.
CarvanaACCESS (Wholesale)	A direct purchase platform for wholesale buyers (traditional dealerships) to buy Carvana vehicles that did not pass its retail inspection standards.
ADESA Auto Auctions	Carvana acquired ADESA, one of the largest physical vehicle auction networks in the US, providing a massive vehicle sourcing pipeline and additional reconditioning capacity.
Carvana App	A seamless mobile app for searching inventory, completing the full purchase process, managing financing, and tracking delivery.

Where Does Carvana Operate?

Carvana currently operates exclusively within the United States, serving customers in all 50 states. The company has expanded its geographic delivery footprint significantly, with same-day delivery now available in dozens of major metropolitan markets. Carvana operates Inspection and Reconditioning Centers (IRCs) — large-scale vehicle processing facilities — at numerous ADESA auction sites across the country, enabling high-volume vehicle preparation for its online inventory. The iconic car vending machine towers are present in select major cities including Nashville, Atlanta, Houston, Austin, Pittsburgh, and others.

⚡ Carvana in 2025 — Carvana posted a record Q3 2025 with $5.65 billion in revenue (up 54.5% YoY) and delivered its highest-ever gross profit per unit of $6,000–$7,000+. The company’s adjusted EBITDA margin hit 12.4% in Q2 2025, a level rarely seen in auto retail.

PART 4

Build.com — The Largest Online-Only Home Improvement Retailer

Company	Build.com, Inc. (a Ferguson Enterprises company)
Founded	1999, founded in Chico, California
HQ	Chico, California, USA
CEO	Part of Ferguson Enterprises (UK-listed: FERG)
Revenue	~$1.4 billion in online sales (2024)
Markets	United States (primary market); ships domestically

What Is Build.com?

Build.com is one of the original e-commerce disruptors in the home improvement and building materials space — and remains the largest online home improvement retailer operating without a brick-and-mortar store. Founded in 1999 in Chico, California, Build.com predates many well-known e-commerce brands and pioneered the concept of selling home improvement products entirely online, long before it became mainstream.

The company stocks over 800,000 brand-name products across every major home improvement category — from plumbing and lighting to appliances, flooring, HVAC, and smart home technology. It has built a network of specialized category websites (LightingShowplace.com, FaucetDirect.com, and others) that together form the Build.com Network of Stores, catering to both everyday homeowners and professional contractors. Build.com was acquired by Ferguson Enterprises, one of the largest plumbing and HVAC distributors in North America, giving it access to an even broader supplier network. Build.com is listed among the Internet Retailer Top 100 companies.

Build.com’s Core Products & Services

Product / Service	Description
Plumbing & Fixtures	Faucets, toilets, bathtubs, showers, sinks, water heaters, and full bathroom suites from top brands like Kohler, Moen, Delta, and American Standard.
Lighting & Fans	One of the largest online lighting selections, covering chandeliers, pendants, recessed lighting, ceiling fans, outdoor lighting, and decorative fixtures.
Kitchen Appliances	Full suite of kitchen appliances including refrigerators, ranges, ovens, dishwashers, and microwaves from brands like GE, Bosch, Samsung, and LG.
Door Hardware & Security	Door knobs, handles, deadbolts, smart locks, hinges, and complete entry systems for residential and commercial use.
Flooring	Hardwood, laminate, tile, vinyl plank, carpet, and area rugs across hundreds of styles and brands.
HVAC & Ventilation	Heating and cooling systems, air conditioners, furnaces, ventilation fans, and air quality products.
Smart Home Products	Smart thermostats, smart lighting, home automation systems, and integrated smart home devices.
Outdoor & Landscape	Outdoor lighting, patio heaters, irrigation systems, outdoor kitchens, and garden fixtures.
Home Decor	Decorative accessories, mirrors, wall art, and interior design elements to complement renovation projects.
Pro Contractor Program	Dedicated account management, volume pricing, project tracking tools, and specialized support for licensed contractors and construction professionals.
Expert Project Support	Free phone and chat consultations with product specialists who can help customers select the right products for their renovation or build project.
Build.com Network of Stores	Specialized niche e-commerce sites (FaucetDirect, LightingShowplace, etc.) targeting specific product categories for expert-level shoppers.

Where Does Build.com Operate?

Build.com operates primarily in the United States. It does not maintain physical retail stores, operating exclusively through its e-commerce platform and network of specialty websites. The company ships products across the continental US using standard parcel delivery (UPS, FedEx) as well as LTL (less-than-truckload) freight for large items like appliances, bathtubs, and cabinetry. Its Pro Contractor program serves professional tradespeople and construction companies nationwide. Build.com’s parent company, Ferguson Enterprises, also operates as one of the largest distributors of plumbing, HVAC, and fire and fabrication products in the United States and Canada.

⚡ Build.com in 2025 — Build.com maintains a dominant position in its niche as the go-to online destination for home renovation products, with an average order value of $600–$625 and over 27,000 monthly transactions. Its Pro Contractor program makes it a favored supplier for licensed tradespeople.

Head-to-Head Comparison: Amazon vs Walmart vs Carvana vs Build.com

Now that we have explored each company individually, here is a comprehensive side-by-side comparison across all key dimensions to help you understand how these four e-commerce leaders stack up against one another.

Category	Amazon	Walmart	Carvana	Build.com
Founded	1994	1945	2012	1999
HQ	Seattle, WA	Bentonville, AR	Phoenix, AZ	Chico, CA
2025 Revenue	~$717B (total)	~$681B (total)	~$13B+	~$1.4B
Primary Model	Marketplace + AWS	Omni-channel Retail	Online Car Sales	Online Home Improvement
Key Differentiator	Everything Store	Everyday Low Price	Car Vending Machine	Largest Online Home Store
Delivery	Same-day / Prime	Same-day (93% US)	Home delivery	Standard/LTL shipping
Marketplace	Yes (3P sellers)	Yes (160K sellers)	No	No
Mobile App	Yes	Yes	Yes	Yes
Subscription	Amazon Prime	Walmart+	No	No
B2B Services	AWS, Business	Sam’s Club, Ads	ADESA Wholesale	Pro Contractor
International	20+ countries	18+ countries	US only	US only
No-Haggle Pricing	Listed prices	Listed prices	Yes (fixed)	Yes (listed)
Return Policy	30–90 days	90 days	7-day test drive	90–180 days
AI / Tech Focus	Alexa, Rufus AI	Sparky AI	Algo-pricing	Product guides
Best For	All shoppers	Value seekers	Used car buyers	Homeowners / Pros

What You Need to Know: Key Insights for Consumers & Investors

About Amazon — The Ecosystem Play

Amazon is not just a shopping platform — it is an ecosystem. The more services you use (Prime, Alexa, AWS, Prime Video), the more locked-in you become, and the more value you receive. For consumers, the key insight is that Amazon Prime’s true value lies not in free shipping alone, but in the bundled entertainment, grocery delivery, healthcare, and cloud storage benefits. For businesses, selling on Amazon’s marketplace gives access to hundreds of millions of ready-to-buy customers, but comes with intense price competition and Amazon’s own private-label brands as potential rivals. Amazon Haul is a direct challenge to Temu and Shein, signaling Amazon’s determination to dominate the ultra-value segment as well.

• Amazon Prime has 260 million global subscribers — more than the population of Brazil.
• Amazon Ads is now one of the top 3 digital advertising platforms in the world alongside Google and Meta.
• AWS powers roughly 31% of all cloud infrastructure globally, making Amazon essential to the internet itself.
• Amazon is expanding same-day delivery to rural US markets, reducing the last geographic advantage of physical retailers.

About Walmart — The Physical Store Advantage

Walmart’s e-commerce transformation story is one of the most remarkable in retail history. The insight for consumers is that Walmart’s physical network of 4,600 US stores — long considered a liability in the digital age — has become its greatest competitive weapon. Those stores serve as urban fulfillment micro-warehouses, enabling same-day delivery economics that pure-play online retailers struggle to match. The Walmart+ membership is increasingly compelling compared to Amazon Prime, especially for consumers who shop for groceries regularly. Walmart’s Sparky AI agent is also a serious step toward agentic shopping, where AI assistants make purchases on your behalf.

• Walmart ecommerce grew 27% in the US in Q4 FY2026 — faster than any comparable quarter in its history.
• In China, more than half of all Walmart China sales are now online — a remarkable shift for a physical retailer.
• Walmart’s advertising business reached $6.4B in 2025, and it is one of the fastest-growing retail media networks globally.
• Flipkart gives Walmart a powerful position in India’s $1 trillion ecommerce opportunity, one of the world’s largest untapped markets.

About Carvana — The No-Dealership Revolution

Carvana represents something genuinely new: it proved that one of the most high-anxiety, relationship-dependent consumer purchases — a used car — can be done better online than in person. The insight for consumers is that Carvana’s pricing transparency, 7-day return guarantee, and home delivery genuinely remove the worst parts of traditional car buying. There are no commissioned salespeople, no pressure tactics, and no hidden fees. For investors, Carvana’s story is one of a company that nearly collapsed in 2022 under debt pressure and then executed one of the most spectacular business turnarounds in recent Wall Street memory, achieving record revenues and margins in 2025.

• Carvana eliminated its only significant online competitor (Vroom) which exited e-commerce used car retail entirely.
• The 7-day test-own guarantee reduces buyer risk to nearly zero — you can literally return the car if you change your mind.
• Carvana’s ADESA acquisition gave it the largest vehicle reconditioning and auction infrastructure of any online auto retailer.
• Carvana currently operates only in the US — international expansion represents a significant future growth opportunity.

About Build.com — The Specialist’s Advantage

Build.com’s insight is that deep specialization beats breadth in high-consideration product categories. When you are spending $800 on a bathroom faucet or $3,000 on a kitchen range, you want product expertise, accurate inventory data, and expert guidance — not just the lowest price. Build.com has built its reputation on exactly that: a massive, curated selection of premium home improvement brands, supported by knowledgeable product specialists. For homeowners undertaking renovations, Build.com often offers better selection, more detailed product information, and more competitive pricing than generalist platforms like Amazon or Walmart.

• Build.com’s average order value of $600–$625 reflects the high-ticket, considered nature of home improvement purchases.
• The Pro Contractor program creates a loyal professional customer base that drives repeat, high-volume orders.
• Build.com’s 90–180 day return policy is more generous than Amazon’s or Walmart’s for large home improvement items.
• The Build.com Network of Stores (FaucetDirect, LightingShowplace) drives highly targeted organic search traffic from category-specific shoppers.

Which Platform Is Right for You?

Your Need	Best Choice	Why
Buy almost anything, fast	Amazon	Largest selection, fastest delivery, Prime benefits ecosystem
Everyday groceries & household essentials	Walmart	Best value pricing, same-day delivery from local stores, Walmart+
Buy a used car stress-free	Carvana	Fixed pricing, 7-day return, home delivery, no dealership pressure
Home renovation products	Build.com	Largest specialized selection, expert support, pro contractor pricing
International shopping	Amazon	Operates in 20+ countries with localized marketplaces
Sell products to millions	Amazon Marketplace	Largest seller ecosystem, FBA logistics, 635M app users
Value pricing on brand names	Walmart	Everyday Low Price DNA + price-match policy
Sell your car for cash fast	Carvana	Instant online offers, home vehicle pickup, no dealership required
Premium lighting & plumbing brands	Build.com	Over 800K SKUs, exclusive brand access, knowledgeable specialists
AI-powered shopping assistant	Walmart (Sparky)	35% higher AOV for Sparky users; OpenAI & Alphabet partnership
Streaming + shopping bundle	Amazon Prime	Prime Video, Music, Gaming + all shopping benefits in one membership
Quick grocery delivery	Walmart	Express delivery under 3 hours available; 93% US household coverage

Conclusion: Four Platforms, Four Distinct Futures

Amazon, Walmart, Carvana, and Build.com are all thriving examples of how e-commerce continues to evolve — not as a single monolithic industry, but as a collection of highly specialized, technology-driven marketplaces each winning in its own domain. Amazon dominates breadth. Walmart dominates value and physical-digital integration. Carvana dominates convenience in auto retail. Build.com dominates depth in home improvement.

What all four share is an unwavering commitment to making shopping easier, faster, and more transparent than traditional retail ever was. They are all investing heavily in artificial intelligence — Amazon’s Rufus, Walmart’s Sparky, Carvana’s algorithmic pricing, and Build.com’s product recommendation engines — signaling that the next wave of e-commerce competition will be won or lost on who can best understand and serve individual consumer needs before the consumer even knows what they want.

Whether you are a consumer shopping for a car, a contractor ordering bathroom fixtures, a family buying groceries, or a business owner managing cloud infrastructure — there has never been a better time to take advantage of what these e-commerce giants have built for you.

🔑 Bottom Line — Each of these four platforms excels in its category. Use Amazon for everything. Use Walmart for value and groceries. Use Carvana to buy or sell a used car without stress. Use Build.com for home renovation projects that demand expert-level product selection.

Disclaimer: Revenue figures, statistics, and operational details are based on publicly available information as of April 2025. All financial data is approximate and may vary. This article is for informational purposes only.