What is a Decentralized Application (DApp)?

Once you’ve explored the blockchain, nodes, consensus mechanisms and its core components, a natural question arises:

“What kind of applications can I build on the blockchain?”

The answer is Decentralized Applications, or DApps. These applications operate on blockchain networks and consist of:

A standard front-end built with JavaScript or frameworks like React, Vue, or Svelte.
A blockchain-based backend using languages like Solidity (Ethereum), Solana, or Rust.
To see DApps in action, check out platforms like DApp Radar, which showcases real-world examples, including DeFi (Decentralized Finance) and other blockchain-based applications.

To understand how the front-end and blockchain backend communicate and exchange data, you’ll need to learn front-end development and foundational principles of backend development, APIs and design patterns.