CSS3

Back-end development involves programming the internal logic of a website or application that runs on the server and is not directly visible to the user, including processing database queries, managing user sessions, and communicating with external services.

HTML5 is the latest version of the standard language used to structure and display web pages on the Internet. It introduces advanced semantic tags, direct support for audio and video without the need for external plug-ins, and greater compatibility with mobile devices.

First Contentful Paint is a web loading speed metric that measures the number of seconds that elapse from the moment a user navigates to a URL until the web browser renders the first visual element on the screen, such as text, images, or graphics.

Responsive design is an approach to web development and design that aims to ensure a page displays correctly on various devices and screen sizes—from desktop monitors to mobile phones and tablets—using fluid grids, adaptive images, and CSS media queries.

WPO (Web Performance Optimization) is the set of practices and techniques designed to improve a website’s speed and response times. This includes optimizing images, minifying CSS and JavaScript code, implementing caching, and ensuring fast delivery to enhance the user experience and SEO.

JSON is a simple, lightweight text format for exchanging structured data. It is based on the syntax of JavaScript objects but is completely independent of any programming language, making it easy for humans to read and allowing for fast processing by systems and web servers.

FTP is the traditional protocol for transferring files between systems connected to a network, and SFTP is its secure version, which adds end-to-end encryption, allowing you to upload, download, and organize a website's files on the server with complete security.

HTTP is the fundamental protocol that defines the exchange of information on the web, while HTTPS is its encrypted and secure version, which uses SSL certificates to ensure that the data being transferred remains private and protected from cyber spies.