E-commerce means selling products or services directly through a website. Customers browse, select items, pay online, and receive their order — all without a physical interaction. E-commerce sites require a product catalogue, a shopping basket, a secure payment system, and often, a stock management interface.
Real-world example
An e-commerce site is your shop, open 24 hours a day, 7 days a week, accessible to customers anywhere in the world — without needing a member of staff present for every transaction.
Why it matters for you
E-commerce allows you to generate revenue outside of your opening hours and beyond your geographic area. Even a local business can sell nationwide or internationally, with no additional premises costs.
Email marketing involves sending targeted, relevant emails to a list of subscribers who have opted in to receive them. It is one of the oldest and most effective digital marketing channels, offering an exceptional return on investment. Typical emails include newsletters, promotional offers, welcome sequences, and post-purchase follow-ups.
Real-world example
It's like having a direct line to your best customers. Rather than hoping they happen to walk past your shop window, you drop a personalised note through their letterbox at the exact right moment.
Why it matters for you
Email marketing delivers an average ROI of £36 for every £1 spent — consistently outperforming most other digital channels. Unlike social media, you own your subscriber list and are never at the mercy of an algorithm change.
Engagement rate measures how actively visitors interact with your content: clicking buttons, watching videos, reading articles to the end, sharing on social media, or leaving comments. A high engagement rate signals to Google and social platforms that your content is valuable and relevant, which improves your visibility.
Real-world example
Engagement rate is like the applause meter at a concert. A full house that sits in silence gives you little feedback. A full house clapping, singing along, and shouting for encores tells you — and everyone watching — that your show was exceptional.
Why it matters for you
High engagement reduces your bounce rate, increases average time on site, and generates positive signals to Google. Content that genuinely engages visitors converts better and ranks better — a virtuous cycle.
A 404 error occurs when a visitor tries to access a URL that no longer exists on your website — because the page was deleted, moved, or the URL was mistyped. The visitor sees a 'Page Not Found' message. If Google's crawler encounters too many 404 errors, it may lower its assessment of your site's overall quality.
Real-world example
It's like a customer who arrives at your shop's address but finds a building under demolition. They're confused, frustrated, and likely leave to find a competitor. A well-designed 404 page at least gives them directions to somewhere useful.
Why it matters for you
Every 404 error is a lost visitor — and potentially a lost customer. Regularly checking for broken links and setting up redirects from deleted pages to relevant alternatives keeps both visitors and Google crawlers moving forward.
E-E-A-T stands for Experience, Expertise, Authoritativeness, and Trustworthiness. It is the framework Google's quality raters use to evaluate whether a page genuinely helps users. First-hand experience was added in 2022, emphasising that content created by people who have actually done something is rated higher than purely theoretical writing.
Real-world example
A financial advice blog adds author bios with credentials, cites official sources, and earns mentions from banking publications. Google ranks its articles above generic content farms despite lower domain age.
Why it matters for you
In YMYL (Your Money Your Life) sectors — health, finance, legal — E-E-A-T signals are critical ranking factors. Demonstrating genuine expertise is the clearest path to sustainable top-ten positions.
Evergreen content is content that remains relevant and valuable long after its publication date, continuing to attract organic traffic without constant updates. Unlike news articles tied to current events, evergreen pieces answer timeless questions — how-to guides, glossaries, tutorials — that people search for year after year.
Real-world example
A web agency publishes "How to choose a domain name" in 2021. In 2026, the article still ranks on page one and generates 400 visits per month, delivering compounding ROI on a single piece of content investment.
Why it matters for you
Evergreen articles are content assets that compound over time. A single well-crafted guide can generate leads for years — making it one of the best long-term returns on your content budget.
Eco-friendly (or sustainable) web design aims to minimise the carbon footprint of websites by reducing data transfer, server energy consumption, and unnecessary computing load. Techniques include optimising images and fonts, removing unused code, choosing green hosting providers, and avoiding autoplay videos or heavy animations. The website carbon calculator (websitecarbon.com) can measure your site's environmental impact.
Real-world example
A law firm's website redesign reduces page weight from 4.2MB to 680KB by compressing images, removing unused plugins, and switching to a CDN-powered green host. The site loads in 1.1 seconds instead of 6, ranks better on Google, and emits 87% less CO₂ per visit.
Why it matters for you
Beyond the ethical dimension, eco-friendly design and performance optimisation are largely the same thing. A leaner site loads faster, ranks better, and costs less to host. Sustainability and business performance are not in conflict — they reinforce each other.
A professional business email is an address tied to your own domain — you@yourbusiness.com — rather than a free provider like Gmail or Hotmail. It signals credibility to clients, keeps business communications separate from personal email, and enables tools like shared inboxes, team aliases, and email marketing integrations. Common providers include Google Workspace and Microsoft 365.
Real-world example
A freelance consultant sends proposals from mike.johnson@gmail.com. A competitor sends theirs from mike@mjconsulting.co.uk. In client surveys, 68% of SMB decision-makers say they trust a domain email more for B2B services — even before reading the proposal content.
Why it matters for you
A professional email address is one of the cheapest, fastest credibility signals you can add to your business. At roughly £5/month per user, it pays for itself many times over in increased client trust and closed deals.
Web ergonomics — closely related to UX (user experience) and usability — is the discipline of designing websites so that visitors can complete their goals with minimal effort and maximum clarity. It covers navigation logic, button placement, reading flow, mobile touch targets, form design, and error handling. A well-ergonomic site is intuitive: users never have to think about where to click next.
Real-world example
A dentist's website has a "Book Appointment" button buried in the footer — visible only after scrolling past a wall of text. A competitor's equivalent button is fixed in the top-right corner, visible on every page, in a contrasting colour. The second site receives 4× more online bookings.
Why it matters for you
Poor web ergonomics invisibly costs you customers every day. Visitors who can't find what they need in 3 seconds leave — and rarely return. Ergonomic improvements are often the highest-ROI changes available to established businesses with decent traffic.
Your online reputation is the collective perception of your business formed by everything visible about you on the internet: Google reviews, Trustpilot scores, social media comments, press mentions, and forum discussions. It directly influences whether potential customers contact you or a competitor. Managing your e-reputation means actively monitoring reviews, responding professionally to both positive and negative feedback, and generating a steady stream of authentic client testimonials.
Real-world example
Two identical plumbers, same pricing, same area. One has 4.9★ on Google with 87 reviews and responds to every one. The other has 3.8★ with 12 reviews and ignores negative comments. In A/B tests, 94% of local searchers click through to the higher-rated business first.
Why it matters for you
Your online reputation is often the deciding factor in whether a prospect calls you or a competitor. A proactive reputation management strategy — starting with Google Business Profile — is one of the highest-leverage, lowest-cost investments a local business can make.
Entity SEO is a modern approach to search optimisation based on how Google's Knowledge Graph understands the world — through named entities (people, places, organisations, concepts) and their relationships, rather than simple keyword matching. By making your brand, its expertise, and its key topics clearly identifiable as entities in Google's knowledge base, you improve your visibility across a broad range of related searches.
Real-world example
A nutritionist who writes consistently about "gut health", "microbiome", and "IBS diet" across their website, is cited on health platforms, and has a Google Knowledge Panel begins to be treated as an authoritative entity on these topics. Google surfaces their content more broadly — even for queries that don't contain their exact keywords.
Why it matters for you
Google has moved well beyond keyword-matching towards semantic understanding. Businesses that build genuine topical authority around their core subjects — rather than just targeting individual keywords — gain broader, more durable visibility. This is the foundation of modern SEO strategy.