The backend is the behind-the-scenes part of a website or app that powers everything you see and interact with on the screen. It manages data, processes requests, runs logic, and communicates with other systems to ensure the app functions smoothly. Think of it as the engine that drives the experience, working quietly in the background to make sure everything runs seamlessly.

Data and AI are the brains behind modern apps and systems. Data is the raw information collected and stored, while AI processes that data to recognize patterns, make predictions, and automate decisions. Together, they turn information into insights and power smart features, like recommendations, chatbots, or self-driving cars, making technology more intelligent and useful.

The frontend is the visible part of a website or app — the design, buttons, text, and images you see and interact with on your screen. It’s where user experience comes to life, translating the behind-the-scenes data into something intuitive and visually appealing. Think of it as the polished interface that connects you to the system, ensuring everything looks and feels just right.