What Is Ecommerce?

Ecommerce is the buying and selling of goods and services over the Internet, through websites, marketplaces, social platforms, and online ordering portals. It is no longer a side channel: U.S. ecommerce sales reached $340.2 billion in the second quarter of 2026, up 12.2 percent from a year earlier, and now make up 17.1 percent of total retail sales.

For small to midsized companies, the question is which type of ecommerce, what business model, and which channels fit the way your buyers already shop.

Ecommerce decisions affect your margins, operations, and marketing for years. Keep these points in mind as you evaluate where online sales fit in your business.

• Ecommerce covers any transaction completed online including physical products, digital goods, services, subscriptions, and B2B reorders.
• The main types of ecommerce are defined by who buys and who sells: B2C, B2B, D2C, C2C, B2G, and C2B.
• Your business model whether inventory, dropshipping, subscription, wholesale, or services shapes your margins more than your platform choice does.
• Checkout friction costs sales: the average documented cart abandonment rate’s just over 70%.
• B2B buyers now expect online ordering, which makes ecommerce relevant for manufacturers, distributors, and service firms, not just retailers.
• A simple 5-question readiness check will indicate whether ecommerce fits your business before you invest in an ecommerce website build.

Ecommerce is short for electronic commerce. In practice, it means that a customer can find, evaluate, and pay for what you sell without a phone call, a sales rep, or a store visit.

The definition matters because it shapes what you consider possible. Companies that think of ecommerce only as a retail storefront often overlook simpler, faster ways to sell online that suit their customers better.

Many owners picture an online store full of consumer products. The term’s much broader: a law firm taking retainer payments online, a winery shipping club memberships, and a parts distributor running a reorder portal are all ecommerce businesses.

An ecommerce business is any company that earns part or all of its revenue through online transactions. Most small to midsized companies are hybrids, combining online sales with in person, phone, or field sales.

Every online sale follows the same basic sequence whether you sell candles or industrial valves. Each stage is a point in which a buyer can move forward or leave.

Knowing these stages helps you to quickly diagnose problems. Low traffic points to a discovery issue while plenty of visitors and few orders usually points to evaluation or checkout..

• Discovery—Buyers find you through search engines, artificial intelligence (AI) assistants, social media, ads, email, or a marketplace listing.
• Evaluation—Buyers review product or service pages, pricing, reviews, and policies to decide whether your business is the right choice.
• Cart and checkout—Buyers add items, enter shipping and payment details, and confirm the order.
• Payment processing—A payment gateway authorizes the card or digital wallet, and the processor moves funds to your account after deducting its fees.
• Fulfillment—You (or a fulfillment partner) pick, pack, and ship the orders or deliver the digital products or services.
• After the sale—Order confirmations, shipping updates, returns, and follow-up emails shape whether buyers return.

Stage three’s where many stores leak revenue. Baymard Institute calculates an average documented cart abandonment rate of 70.22 percent. Among shoppers who weren’t just browsing, 40 percent left because of unexpected extra costs such as shipping, taxes, or fees.

Types of Ecommerce by Who Buys and Who Sells

Ecommerce types are grouped by the relationship between buyer and seller. Each type comes with different buyer expectations. Consumers want speed and simple checkout while business buyers want account pricing, order history, and flexible payment terms.

McKinsey describes the following six common categories:

• Business-to-consumer (B2C)—Company sells directly to individual shoppers such as an outdoor gear shop selling online
• Business-to-business (B2B)—Company sells to other companies, often with account pricing, bulk orders, and net payment terms
• Direct to-consumer (D2C)—Brand or manufacturer skips wholesalers and retailers and sells to end customers itself
• Consumer-to-consumer (C2C)—Individuals sell to each other through platforms like eBay or Facebook Marketplace
• Consumer-to-business (C2B)—Individuals sell services or content to companies such as freelancers or creators
• Business-to-government (B2G)—Companies sell to public agencies, usually through procurement portals and contracts

For most small to midsized companies, B2C, B2B, and D2C are the categories that matter. Many businesses run two at once such as a specialty food producer selling D2C online while supplying grocers through a wholesale portal.

Common Ecommerce Business Models

Your business model decides how you make money on each order. Two companies on the same platform can have very different economics depending on the model they choose.

The right model depends on your cash flow, storage space, supplier relationships, and how often customers buy. A marketing strategy plan built on competitor and audience research helps you choose before you commit your budget.

• Inventory-based retail—You buy or produce stock, hold it, and ship it; you control quality and delivery, but carry inventory risk.
• Dropshipping—A supplier ships directly to your customer; start-up costs are low, but margins are thin, and you have less control over delivery.
• Wholesale and distribution—You sell in volume to other businesses, often through a gated B2B ordering portal.
• Subscription—Customers pay on a recurring schedule for products, replenishment, or memberships; predictable revenue’s the main advantage.
• Digital products—Courses, templates, software, and downloads have no shipping costs and can scale without added inventory.
• Services and bookings—Consultations, classes, tours, and appointments are sold and scheduled online, often with deposits or prepayment.
• Print on demand—Products are made only after an order arrives, which reduces inventory risk for custom or branded goods.

Where Ecommerce Happens: Today’s Sales Channels

Ecommerce now spans more places than a single online store. The channels you choose affect your control over branding, customer data, and margins.

Most growing companies use one primary channel and one to two supporting channels. Spreading across every platform at once usually thins out budget and attention without adding proportional sales.

• Your own website—The channel you control most, and the one that builds long-term customer relationships. Our ecommerce website design services build fast, mobile-first stores on WordPress and Shopify.
• Online marketplaces—Amazon, Etsy, Walmart Marketplace, and industry-specific platforms offer built in traffic in exchange for fees.
• Social commerce—Shoppable posts and in-app checkout on Instagram, Facebook, and TikTok work well for visual, impulse-friendly products.
• B2B ordering portals—Password protected storefronts let business customers see their own pricing, reorder, and pay invoices online.
• AI shopping assistants—Buyers increasingly ask AI tools for product recommendations so clear product data and helpful content now influence who gets suggested. Professional content writing services give both search engines and AI tools the detail they need to recommend you.

Benefits and Tradeoffs for Small to Midsized Companies

Ecommerce opens growth that a physical location or sales team alone can’t match. It also introduces costs and responsibilities that catch many companies off guard.

Weighing both sides early protects your margins. The companies that succeed online plan for fees, fulfillment, and marketing from the start instead of discovering them after launch.

Benefits

Selling online gives growing companies reach and efficiency that are hard to achieve through a storefront or sales team alone. These advantages compound as your customer base and order history grow.

• Sell around the clock, beyond your local market, without adding staff for every order
• Collect first-party customer data that sharpens your marketing and product decisions
• Lower the cost of each sale for repeat orders and standard products
• Give B2B customers the self-service ordering many now prefer

Challenges

Online sales also bring new costs and responsibilities that affect profitability. Planning for them before launch keeps them from eroding your margins later.

• Payment processing, platform, and marketplace fees reduce margins on every sale
• Shipping, returns, and customer service demand new processes
• Competition’s national, sometimes global, so visibility takes ongoing investment
• A store that no one can find produces no revenue, regardless of how well it’s built

McKinsey’s research found that small and medium size retailers earn a much smaller share of revenue from ecommerce than large retailers with years of experience. The gap usually comes down to planning, operations, and visibility rather than the products themselves.

Is Ecommerce a Fit? Five-Question Readiness Check

Before choosing a platform or requesting quotes, answer the following five questions; they’ll take less than an hour and can save you months of rework.

Two or more “no” answers means that you should strengthen the foundation before you build. Don’t consider a “no” as a dead end; it simply shows where to focus first.

• Can customers buy without talking to you?
  If most sales require custom quotes or consultations, start with online lead capture or deposits instead of a full cart.
• Do your margins survive online costs?
  Subtract shipping, packaging, payment fees, and returns from each product’s price and see what remains.
• Do you have repeat or reorder demand?
  Products customers buy again such as supplies, consumables, or memberships make ecommerce pay off faster.
• Can your operations handle fulfillment?
  Decide who packs, ships, answers questions, and processes returns before the first order arrives.
• Can buyers find you online today?
  Check where you rank for the terms your customers search and whether AI tools mention your business. SEO services can enable you to close visibility gaps on product and category pages.

If your answers point toward yes, the next step’s planning the launch. Our article on how to start an ecommerce business describes platform choice, site build, pricing, and traffic in order.

Not sure how visible you are right now? Our digital marketing checklist shows what to audit first including search and AI readiness.

Ecommerce Myths that Hold Businesses Back

Outdated assumptions keep many capable companies from selling online or lead them to launch stores that underperform. Most of these beliefs formed years ago, before buyer habits shifted.

Each myth below has a cost. Holding onto it means handing online demand to competitors who’ve already adapted.

• Myth 1: “Our B2B customers prefer to call in orders”—McKinsey reports that two thirds of corporate buyers prefer digital or remote engagement when given the choice, and 65 percent of B2B companies now offer ecommerce. Remember that if you don’t offer online ordering, a competitor probably will.
• Myth 2: “Ecommerce’s only for consumer products”—Service businesses sell bookings, retainers, classes, and packages online every day. If a customer can pay a set price for it, it can be sold online.
• Myth 3: “Once the store launches, sales will follow”—Search visibility, content, and advertising drive traffic, and conversion work keeps it profitable. PPC and paid social advertising can bring in buyers while organic rankings build, and you can track results once you know how to read Google Analytics.

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Reference Sources

• America’s SBDC Network (SBDCNet): Selling Online for Small Business
• Baymard Institute: 50 Cart Abandonment Rate Statistics 2026
• Federal Reserve Bank of St. Louis (FRED): E-Commerce Retail Sales as a Percent of Total Sales (ECOMPCTSA)
• McKinsey & Company: What is e-commerce?
• SCORE: How to Sell Online as a Small Business Owner
• Shopify: What Is Ecommerce? Definition, Types & How It Works
• U.S. Census Bureau: Quarterly Retail E-Commerce Sales

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Frequently Asked Questions about What Is Ecommerce

Business owners exploring online sales tend to ask the same core questions before they commit. Here are our answers to the ones we hear most from small to midsized companies.

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Ready to Turn Ecommerce into a Growth Channel?

Understanding what ecommerce is will provide you with the foundational knowledge you need whereas building a store that gets found and converts will take coordinated strategy, design, and marketing. Mendo Digital helps small to midsized companies choose the right ecommerce model, build stores that convert, and bring in qualified buyers through search and advertising.

Why Businesses Trust Mendo Digital

We’re a digital marketing agency based in Fort Bragg, on the Mendocino Coast, in California. We hold a 5.0-star rating from 50 reviews on Google, have earned an A+ accreditation from the Better Business Bureau (BBB), and have been recognized as Best Marketing Agency in Mendocino County for 2026 by BusinessRate.

Book a free consultation to find out which ecommerce approach fits your business.