What Is Ecommerce? How It Works, Types & How to Get Started
Ecommerce has become part of how we buy almost everything, from clothes and furniture to software, courses and professional services. But ecommerce is more than simply putting products on a website and accepting payments online.
Behind every online purchase is a system that connects marketing, product discovery, website experience, payments, fulfilment and customer service. Understanding how these pieces work together is useful whether you’re starting an ecommerce business or trying to improve an existing one.
And ecommerce is still growing. US retail ecommerce sales reached an estimated $340.2 billion in Q2 2026, according to the U.S. Census Bureau. That’s 17.1% of total US retail sales for the quarter.
What Is Ecommerce?
Ecommerce, short for electronic commerce, is the buying and selling of products or services through the internet. Transactions can happen through an ecommerce website, mobile app, online marketplace or other digital platform.
It isn’t limited to physical products. Ecommerce can include software subscriptions, digital downloads, memberships, online courses, professional services and many other products that can be purchased digitally.
For example, an independent furniture brand might sell tables and chairs through its own website. Customers can browse collections, compare products, choose delivery options, pay online and track their order without visiting a physical store.
How Does Ecommerce Work?
The exact journey varies depending on the business, but most ecommerce transactions follow a similar process.
- A business lists its products or services online. This could be through its own website, an app or an online marketplace.
- Customers discover the business. They might arrive through Google Search, paid ads, social media, email, referrals or direct traffic.
- The customer evaluates the offer. Product pages, images, videos, specifications, pricing and reviews help them decide whether to buy.
- The customer adds a product to their cart. The website stores the selected product and any relevant options.
- Payment is completed. The customer provides payment and, where required, delivery information.
- The order is fulfilled. Physical products are packed and shipped, while digital products or services may be delivered immediately.
- The post-purchase journey begins. Order updates, support, reviews, email marketing and repeat purchases can continue the relationship.
In simple terms, the journey looks like:
Discovery → Product → Cart → Checkout → Fulfilment → Retention
Each stage matters. Getting someone onto the website is only the beginning.
Ecommerce in Numbers
The scale of ecommerce becomes clearer when you look at current retail data.
$340.2 billion
US retail ecommerce sales in Q2 2026.
17.1%
Ecommerce’s share of total US retail sales in Q2 2026.
12.2%
Year-over-year increase in US ecommerce sales compared with Q2 2025.
Source: U.S. Census Bureau, Quarterly Retail E-Commerce Sales, Q2 2026.
These numbers don’t mean physical retail is disappearing. They show that online purchasing has become a significant part of the broader retail experience.
What Are the Advantages of Ecommerce?
Selling online can remove some of the limitations of a traditional physical location. Depending on the business model, the main advantages can include:
- Wider reach: Businesses can sell beyond their immediate city or region.
- 24/7 accessibility: Customers can browse and place orders outside normal store hours.
- Lower expansion barriers: Reaching a new area doesn’t necessarily require opening another physical location.
- Measurable customer behaviour: Businesses can track where visitors come from, what they view and where they leave the buying journey.
- More marketing options: SEO, paid advertising, email, social media and video can all connect directly to products and landing pages.
- Personalisation: Ecommerce stores can tailor recommendations, offers and messaging based on customer behaviour and preferences.
- Scalability: Product ranges, campaigns and customer reach can often grow without expanding physical retail space at the same rate.
These advantages aren’t automatic. A business still needs the right products, positioning, operations and customer experience to turn online reach into revenue.
What Are the Challenges of Ecommerce?
Ecommerce also introduces challenges that physical businesses may experience differently.
High Competition
Customers can compare multiple businesses within minutes. Strong branding, product positioning and customer experience become particularly important when alternatives are only another tab away.
No Physical Product Experience
Customers can’t always touch, test or examine a product before purchasing. Product photography, video, descriptions, reviews and clear specifications have to close some of that gap.
Shipping and Fulfilment
Physical-product businesses need to manage stock, packaging, shipping costs, delivery expectations and returns. Problems after checkout can affect the overall customer experience just as much as the website itself.
Security and Privacy
Online stores handle personal and payment information. Secure payment processing, appropriate privacy practices and reliable technology are essential.
Website and Conversion Friction
A confusing website can make a good product difficult to buy. Slow pages, unclear navigation, weak product information and complicated checkout processes can all introduce unnecessary friction.
What Are the Main Types of Ecommerce?
Ecommerce businesses can also be categorised by who is selling and who is buying.
1. Business to Consumer (B2C)
B2C ecommerce happens when a business sells directly to individual customers.
A skincare brand selling cleansers and moisturisers through its website is a straightforward example. Most traditional online retail falls into this category.
2. Business to Business (B2B)
B2B ecommerce involves one business selling to another.
For example, a packaging supplier might allow restaurants and retailers to order boxes, labels and shipping materials through an online portal. B2B purchases can involve larger orders, custom pricing and longer buying decisions.
3. Consumer to Consumer (C2C)
C2C ecommerce involves individuals selling directly to other individuals, typically through a marketplace.
Someone selling a used camera or piece of furniture to another person through an online platform is participating in C2C ecommerce.
4. Consumer to Business (C2B)
C2B reverses the traditional relationship. An individual provides a product, service or other value to a business.
A photographer licensing an image to a company is one example. Freelancers, creators and independent consultants can also operate through this model.
5. Business to Government (B2G)
B2G ecommerce involves businesses providing products or services to governments or public-sector organisations.
This could include technology, equipment, professional services or software. These transactions often involve more structured procurement and contractual requirements.
Common Ecommerce Revenue Models
Who you sell to defines the ecommerce model. How you make money defines the revenue model.
Some common approaches include:
- Direct sales: The business earns revenue every time a product or service is purchased.
- Subscriptions: Customers pay regularly for continued access to a product or service.
- Marketplace fees: A platform earns commissions or fees by connecting buyers and independent sellers.
- Affiliate revenue: A business earns commission for referring customers to another company’s products or services.
- Freemium: A basic version is available at no cost while customers pay for additional functionality or services.
- Hybrid models: Businesses combine two or more approaches, such as direct product sales with a recurring subscription.
The right model depends on the product, audience, buying frequency and economics of the business.
How to Start an Ecommerce Business
There is no single formula for building a successful ecommerce company, but most businesses need to work through several fundamentals.
1. Identify the Market
Start with the customer rather than the website. Understand who you’re selling to, what they need and what alternatives they currently have.
2. Define Your Product and Positioning
Be clear about what you’re selling and why someone should choose it. A good product still needs a clear reason to exist in a competitive market.
3. Choose Your Business and Revenue Model
Decide whether you’re selling directly to consumers, businesses or another audience, and determine how the business will generate revenue.
4. Plan Operations and Fulfilment
For physical products, consider inventory, packaging, shipping, returns and customer service before orders begin arriving.
5. Build Your Ecommerce Experience
Your website should make it easy for people to understand your offer, discover products, compare options and purchase confidently.
6. Create a Customer Acquisition Strategy
Decide how people will find the business. This could involve SEO, paid advertising, social media, email, content, partnerships or a combination of channels.
7. Measure and Improve
Launching isn’t the end of the process. Track customer behaviour and continuously look for opportunities to improve the experience. For the full build process, see how to build an ecommerce website; if you plan to sell on marketplaces, see how to find profitable products to sell on Amazon.
What Makes a Good Ecommerce Website?
A good ecommerce website does more than look polished. It helps customers make decisions.
Someone arriving for the first time should quickly understand what you sell, who it’s for and what they should do next.
Important elements commonly include:
- Clear navigation and product categories
- Strong product photography
- Useful product descriptions
- Pricing and product options
- Reviews and other relevant trust signals
- Delivery and returns information
- Mobile-friendly design
- Clear calls to action
- Simple cart and checkout experiences
- Fast, reliable page performance
Not every store needs the same layout. A company selling £20 skincare products has a very different buying journey from one selling £2,000 furniture.
The design should reflect how customers actually make the decision.
How Do Ecommerce Businesses Get Customers?
Building an online store doesn’t automatically create traffic. Ecommerce businesses usually rely on a mix of acquisition channels.
Search Engine Optimisation
SEO helps product pages, categories and informational content appear when people search for relevant topics.
A running-shoe retailer, for example, might target product searches as well as informational questions around choosing running shoes, sizing or different types of training. Matching each page to the right search intent is what makes this work.
Paid Advertising
Search and social advertising can put products in front of people based on intent, interests, behaviour or other targeting signals.
The experience after the click matters too. If an ad promotes a particular product or offer, sending visitors to a relevant landing page usually creates a clearer journey than making them search for it again.
Social Media
Social content can introduce products, communicate brand personality and keep businesses visible to potential customers before they’re ready to buy. See the social media trends shaping 2026.
Email Marketing
Email can support abandoned carts, new product launches, offers, post-purchase communication and repeat purchases.
Video
Video can demonstrate how products work, answer questions and show them in situations that static images can’t easily communicate.
The best channel mix depends on where your audience spends time and how they make purchasing decisions.
Why Conversion Rate Optimisation Matters
More traffic doesn’t automatically produce more sales.
If thousands of visitors reach an ecommerce store but struggle to understand products, navigate the site or complete checkout, buying more traffic may simply send more people into the same problems.
One useful indicator is cart abandonment.
70.22%
That’s the current average documented online shopping cart abandonment rate calculated by Baymard Institute from 50 different studies.
Not all of those abandoned carts represent lost sales that could have been prevented. Baymard’s research also shows that some shoppers are simply browsing or aren’t ready to purchase.
But it illustrates why the experience between product discovery and completed purchase deserves attention.
Conversion rate optimisation (CRO) helps businesses investigate that experience. Analytics can show where visitors leave, while heatmaps, session recordings, customer feedback and testing can help explain what might be causing the friction.
Common areas for ecommerce CRO include:
- Landing pages
- Product pages
- Navigation
- Product discovery
- Mobile UX
- Calls to action
- Cart experience
- Checkout
- Forms
- Messaging and product positioning
The goal isn’t to change everything. It’s to find what is getting in the customer’s way and improve it.
How Video Can Support Ecommerce
Online customers can’t physically experience a product before buying it. That’s where video can become particularly useful.
Imagine a company selling portable espresso makers. Product photography can show colours, dimensions and accessories, but video can demonstrate how the product works, how quickly it’s prepared and what using it actually looks like.
Video can support different stages of the customer journey:
- Video ads can introduce the product.
- Social videos can build awareness and demonstrate use cases.
- Landing-page videos can explain an offer quickly.
- Product videos can demonstrate features and scale.
- Customer videos can provide real-world context.
- Post-purchase videos can explain setup or usage.
The objective isn’t to add video to every page. Use it where showing something is more useful than describing it.
How to Calculate Ecommerce Conversion Rate
A basic ecommerce conversion rate can be calculated using:
Conversion Rate = (Number of Conversions ÷ Number of Visitors) × 100
For example, if a store receives 10,000 visitors and generates 300 purchases:
300 ÷ 10,000 × 100 = 3% conversion rate
However, conversion rate shouldn’t be viewed on its own.
Other useful ecommerce metrics can include:
- Revenue
- Revenue per visitor
- Average order value
- Customer acquisition cost
- Add-to-cart rate
- Checkout completion rate
- Repeat purchase rate
- Customer lifetime value
- Return on advertising spend
Looking at several metrics together gives you a much better picture of business performance than relying on a single percentage. Our guide to CRO metrics and KPIs explains which ones to prioritise.
Ecommerce FAQs
What does ecommerce mean?
Ecommerce means electronic commerce: buying and selling products or services through the internet using websites, apps, marketplaces or other digital platforms.
What is an example of ecommerce?
Ordering a pair of running shoes through a brand’s website is ecommerce. The customer discovers the product online, reviews it, pays digitally and receives the order through delivery.
What are the main types of ecommerce?
The main models include B2C, B2B, C2C, C2B and B2G, depending on who is selling and who is buying.
Do you need a website to start ecommerce?
Not necessarily. Businesses can sell through marketplaces and other platforms. However, owning an ecommerce website gives a business more control over branding, customer experience, data, marketing and the buying journey.
How do ecommerce businesses attract customers?
Common channels include SEO, paid advertising, social media, email marketing, video, referrals, partnerships and direct traffic. Most established ecommerce businesses use a combination of channels.
What is ecommerce conversion rate optimisation?
Ecommerce CRO is the process of improving an online store so that a greater percentage of visitors complete valuable actions, such as adding products to their cart, starting checkout or making a purchase.
Ecommerce Is More Than an Online Store
Starting an ecommerce business is easier than it once was. Building an ecommerce experience that consistently attracts the right people and makes it easy for them to buy is the harder part.
Your ads, content, landing pages, website, product pages, checkout and creative don’t operate independently. They’re all part of the same customer journey.
At BrandUs, we help businesses improve that journey through website and landing page design, conversion rate optimisation and performance-focused video editing.
Because generating the click is only one part of ecommerce growth. What happens after the click matters just as much.