Pros and Cons of Layer 2 Solutions
Ethereum is Layer 1, it has problems with scalability, very expensive transactions to solve these problems, was created a new Polygon Layer 2 blockchain, where they took into account all the shortcomings that were associated with Ethereum with the help of smart contract protocols. But there is a big minus, Layer 2 solutions are centralized, therefore they are deprived of the main advantage of the blockchain, using Layer 2 solutions, there is always a risk associated with the honesty of the team that controls this manual blockchain.