Website glossary for business owners: domain, hosting, CMS, SSL and other terms
Canonical
A tag in a page's HTML head that tells Google which URL is the official version when the same content is reachable through multiple URLs (with/without www, with tracking parameters, http vs https). Missing or wrong canonical tags cause duplicate-content confusion and split ranking signals between URL variants.
CMS
Content Management System — the software you log into to add pages, blog posts and images without touching code. WordPress is the most common CMS worldwide. Alternatives include Webflow, Squarespace and custom systems. The choice matters: some CMSs are easy for editors, others are cheaper long-term, and some lock you in.
Core Web Vitals
Three specific speed and stability metrics Google uses as a ranking factor: LCP (how quickly the main content shows), INP (how fast the page responds to a click), and CLS (whether content shifts unexpectedly while loading). Targets: LCP under 2.5 seconds, INP under 200ms, CLS under 0.1. Measure them in Google Search Console.
Crawler (botti)
An automated program that visits websites, downloads pages, and follows links to discover more pages. Googlebot is the most famous. Others include Bingbot, GPTBot (ChatGPT), ClaudeBot (Anthropic), PerplexityBot. Your robots.txt file tells crawlers which pages they are welcome to visit — but most well-behaved crawlers respect it, and misbehaving ones ignore it.
CTA
Call to Action — the button or link asking the visitor to do the thing you want: 'Get a quote', 'Book a call', 'Add to cart'. Good CTAs are specific verbs, visually prominent, and repeated only where they belong. Every page should have exactly one primary CTA; too many choices reduce conversion.
DNS
The system that translates your domain (bluefour.fi) into the IP address of your hosting server. When you point a new domain to a new server, DNS changes usually take between a few minutes and 24 hours to propagate across the internet. Wrong DNS settings are the most common cause of 'my site suddenly went down after I changed hosting'.
Domain
Your website's public address, like bluefour.fi. You rent it from a domain registrar (usually 10 to 20 euros per year) for a fixed term. It is separate from hosting: the domain is the address, hosting is the physical space. Losing control of the domain — because someone else renewed it, or you forgot — usually means losing your online presence overnight.
Evästeet (cookies)
Small text files a website stores in the visitor's browser. Some are essential (keeping you logged in), others track behaviour across sites for advertising. Under Finnish and EU law, non-essential cookies require explicit consent before being set — this is what cookie banners are for. A fake banner that sets cookies before the user clicks is illegal.
GEO
Generative Engine Optimisation — the practice of making a website easy for AI search engines (ChatGPT, Perplexity, Google AI Overviews) to quote. Overlaps ~80% with SEO. Key additions: full article text in the HTML (not JavaScript-loaded), a direct-answer paragraph near the top, and a FAQ section at the bottom.
Hosting
The physical or virtual server where your website's files live. When someone opens your site, their browser downloads the files from your hosting. Cheap shared hosting starts around 5 euros a month; managed WordPress hosting is typically 20 to 50 euros. Slow hosting is one of the most common reasons for a slow website.
Hreflang
A tag that tells Google 'this page has a Finnish version at URL A and an English version at URL B'. Essential for multilingual sites — without it, Google may show the wrong language version to the wrong audience. Must be present on both the FI and EN version of every page pair.
Indeksointi
The step where a search engine stores a copy of your page in its database. Being indexed is a prerequisite for ranking — a page not in Google's index can never appear in results. Check indexing per-page in Google Search Console. New sites often take days or weeks to get fully indexed.
Konversio
The action you want visitors to take: submit a form, buy a product, book a call. Conversion rate = (people who did the action) ÷ (people who visited). A typical Finnish SME site converts 1 to 3% of visitors. Doubling conversion rate is often cheaper than doubling traffic.
Laskeutumissivu
A page designed for a single specific action — usually one that a paid ad or campaign sends traffic to. Focused headline, one clear offer, one call-to-action, minimal navigation. A homepage is a lobby; a landing page is a checkout counter. Good landing pages convert 3 to 10x better than a homepage for paid traffic.
LCP
Largest Contentful Paint — how long the biggest visible element (usually the hero image or headline) takes to appear on screen. Google's target is under 2.5 seconds on mobile 4G. The most common causes of slow LCP are unoptimised images, heavy web fonts, and slow hosting.
Lighthouse
A free tool built into Google Chrome (F12 → Lighthouse tab) that scores any web page 0 to 100 in four areas: Performance, Accessibility, Best Practices, SEO. A useful first-look diagnostic. Take individual scores with a grain of salt — the improvement suggestions are more valuable than the number itself.
Maksunvälittäjä
The service that takes the money from your customer's card or bank and delivers it to your account. In Finland: Paytrail, Stripe, Klarna, and bank e-payments through providers like Nets. Typical fees are 1.5% to 3% per transaction plus a small fixed fee. Never handle card data yourself — always route through a certified processor.
Open Graph
The set of meta tags (og:title, og:description, og:image) that control how your page looks when shared on Facebook, LinkedIn, WhatsApp or Slack. Without them, the preview is often blank, wrong, or shows an unrelated logo. Every important page should have a custom og:image sized 1200×630.
Saavutettavuus
How well a website works for people with disabilities — screen reader users, keyboard-only users, colour-blind users. In Finland, the standard is WCAG 2.2 AA. Public sector sites and larger private services must comply by law. Practical basics: sufficient colour contrast, keyboard navigation, image alt text, correct heading order.
Schema (rakenteinen data)
Machine-readable labels you add to a page's HTML (usually as JSON-LD) so search engines know that a piece of text is a price, a review, a FAQ, or a recipe. Enables rich results in Google — stars, prices, breadcrumbs. Not a ranking factor by itself, but pages with schema get more visible listings.
SEO
Search Engine Optimisation — the work of making a website easy for Google to understand and worth ranking high. It splits into three parts: technical (site speed, structure, mobile), content (writing pages that answer real searches), and authority (other trusted sites linking to yours). SEO is slow — expect 3 to 6 months before results become visible.
Sivukartta (sitemap)
An XML file at the root of your site (usually /sitemap.xml) that lists every URL you want search engines to know about. Not a ranking factor, but it speeds up discovery of new pages. Submit it in Google Search Console. Every modern CMS generates one automatically; check that it actually exists and is up to date.
SSL / HTTPS
The encryption that shows the padlock in the browser address bar and turns http:// into https://. Modern hosting includes free SSL certificates (Let's Encrypt) automatically. Without SSL, browsers show a 'Not secure' warning, Google downranks the site, and payment forms will not work. This is a non-negotiable in 2026.
Verkkokauppa-alusta
The software that runs an online store: products, cart, checkout, orders. Most common in Finland: WooCommerce (WordPress plugin, flexible, ~50 to 200 euros a month total), Shopify (all-in-one, ~30 to 100 euros a month plus transaction fees), and Finnish-hosted alternatives like MyCashflow. The best choice depends on catalogue size, integrations, and who will maintain it.
Published · Kaspar Eevald
Bluefour – Helsinki digital agency | hello@bluefour.fi | +358 45 850 4236