2. Blockchain technology before Cardano

Bitcoin was created to eliminate a central authority in verifying transactions. Due to its simple design, it was very secure.

Ethereum brought smart contracts and decentralized apps. But Ethereum has run into such problems as high gas fees and scalability .

Cardano is part of the so-called third generation in blockchain technology, which includes platforms like Polkadot and Cosmos. Aside from scalability, third-generation platforms like Cardano also seek to address interoperability and sustainability issues that plagued the earlier generations.