Scalability is a critical issue in blockchain technology, referring to the ability of a blockchain network to handle increasing transaction volumes and growing user demand without compromising performance, speed, or efficiency. Here's an overview of the challenges associated with scalability in blockchain and some solutions to address them:

Layer 1 and Layer 2 solutions are two approaches to scaling blockchain networks, each addressing scalability challenges in different ways. Here's an overview of Layer 1 and Layer 2 solutions and how they contribute to scaling blockchain: