Glossary
Technical terms, without tech jargon.
The terms that appear in our texts — explained briefly and clearly. So you can join the conversation without having studied computer science.
- API
- An interface that lets two programs automatically exchange data. This way you can connect a newsletter system, an online shop, or a social media channel to your website without anyone having to manually transfer anything.
- Bot
- An automated program that visits websites without human interaction. Some are helpful (search engines), others scrape content, hunt for vulnerabilities, or generate traffic spikes. Malicious bots reveal themselves through their behavior, not individual requests.
- Cache
- A cache stores ready-made results instead of recalculating them with every request. When used properly, caching dramatically speeds up your pages and takes the load off your server.
- Canonical (canonical URL)
- A signal to search engines indicating which URL is the "correct" one when the same content is accessible under multiple addresses. Without canonical tags, your ranking power gets spread across competing versions.
- Core Web Vitals
- A set of metrics Google uses to evaluate user experience: how quickly the page becomes visible, how fast it responds to user input, and how stable the layout remains while loading. They impact your ranking.
- Crawler
- The part of a search engine that visits and reads pages to add them to the index. What the crawler can't reach or understand can't rank.
- DKIM
- An invisible digital signature beneath every email. The recipient calculates whether it matches — if it doesn't, the message is flagged as altered or forged and lands straight in spam.
- DMARC
- A policy that connects SPF and DKIM and determines what happens when authentication fails: allow, send to spam, or reject. Without DMARC, each recipient makes their own decision.
- Page Speed
- How long it takes for a page to load matters. Slow loading times cost you visitors and search visibility — speed is both a user experience essential and a ranking factor.
- Rate Limiting
- A rate limit that controls how many requests a source can make in a short timeframe. This effectively slows down suspicious bots while keeping genuine visitors and search engines running smoothly.
- Schema.org (structured data)
- A machine-readable format that clearly explains your page content to search engines — like "this is an article," "this is a review," "this is a question." The foundation for rich snippets with stars, FAQs, or images in search results.
- SEO (Search Engine Optimization)
- All measures that ensure your website is found when potential customers search for relevant terms — both technical (accessibility, speed, structure) and content-related (relevant, well-written information).
- Visibility Index
- A metric (such as Sistrix) that estimates how visible your domain is in Google search results. When it goes up, your page appears for more search queries and in better positions.
- Sitemap
- A machine-readable list of all important pages on your website that makes it easier for search engines to find them. Especially useful when you have many pages or frequently add new content.
- SPF
- A DNS record that specifies which servers are authorized to send emails on behalf of your domain. If an unlisted server sends mail, it will be flagged as suspicious.
- TTFB (Time to First Byte)
- The time it takes for your server to send back the first byte of data — the invisible culprit that often drags down speed the most. If this is measured in seconds, even the leanest design won't save you.
- Email Deliverability
- Whether an email actually lands in your inbox instead of spam depends mainly on correct technical setup (SPF, DKIM, DMARC) and your sender reputation—the content itself plays a surprisingly small role.