Learn with Bader
Learn is a glossary of plain definitions: what an API is, what HTTPS does, what an AI hallucination is. Every entry starts with a one-sentence definition, links its source, and says why it matters for a small business. It is the written home of the daily LearnWithBader facts.
404 error
A 404 error means the server was reached but could not find the page that was asked for.
AI hallucination
An AI hallucination is an output from an AI model that sounds plausible but is factually wrong.
Alt text
Alt text is a written description of an image that screen readers read aloud to people who cannot see it, and that shows when the image cannot load.
API
An API is a set of features and rules inside a piece of software that lets other software interact with it, like a contract between the two.
HTTPS
HTTPS is an encrypted version of HTTP: it uses TLS to encrypt the communication between the visitor's browser and your server.
Large language model (LLM)
A large language model is a model that predicts tokens, the words or word pieces in a sequence.
Multi-factor authentication
Multi-factor authentication means using two or more different factors to prove who you are: something you know, something you have or something you are.
Responsive web design
Responsive web design uses flexible grids, fluid images and usually CSS media queries so one website adjusts itself to a phone, a tablet or a desktop screen.
robots.txt
A robots.txt file tells search engine crawlers which parts of your site they may visit.
Sitemap
A sitemap lists the pages of your site to give search engines information about them; it is a hint, not a guarantee that they will be indexed.
The 3-2-1 backup rule
The 3-2-1 backup rule says to keep three copies of your data, on two different kinds of storage, with one copy in a different place.
WhatsApp customer service window
The customer service window is the 24 hours that start when a customer messages your business on the WhatsApp Business Platform; while it is open you can reply with free-form messages, and after it closes you can only send pre-approved template messages.