Cardano is a Layer 1 blockchain with the intent to be scalable, secure, and sustainable. It operates with the $ADA cryptocurrency and uses the Ouroboros Proof-of-Stake (PoS) consensus mechanism to secure the network.
Overview
Review

Key Benefits
Predictable and Low Fees
Decentralization
Energy-Efficient Consensus Mechanism
No Slashing (Safer Staking)
Real-World Adoption

Red Flags
Slow Development
Lower Adoption
Difficult for Developers
Tough Competition