Why do decentralized projects need testnets for scaling solutions?

Testnets help test scaling solutions like sharding or Layer 2 protocols. They allow developers to simulate high transaction volumes, ensuring scalability improvements function efficiently before being applied to the mainnet.

Testnets play a crucial role in ensuring the effectiveness of scaling solutions for decentralized projects. By simulating high transaction volumes, developers can identify and resolve any potential issues before implementing changes on the mainnet. This proactive approach is key to achieving scalability improvements without compromising network security or performance.