The glossary — chapter 7 of 12
Performance, HTTP & Migrations, defined
Speed, status codes, and the moves that break sites — or don’t.
In practice
A store monitors the metric or response across product, category and checkout templates before prioritising fixes.
Why it matters
It affects how quickly and reliably users and crawlers can complete their tasks.
Core Web Vitals
Real-user metrics focused on loading, responsiveness and visual stability.
Ana says: A perfect score is cute. A fast, usable checkout pays invoices.
CLS
A metric measuring unexpected movement of elements while a page loads.
Ana says: Nothing builds trust like the checkout button escaping from the customer.
Beyond the definitions
Where this chapter becomes work
Crawling, indexing, rendering and architecture, handled properly.
Proof, or nothing.
Where this leads
The definitions are free. The diagnosis is a conversation.
A conversation first, to check the fit. If what you need is not something I do, I will tell you who does.
Nine ways of working, from a one-off audit to ongoing consulting.
The full glossary, with the A–Z index and the PDF.