There are different kinds of networks in web3, typically described in layers. Bitcoin, BNB Chain, and Ethereum, for example, are the base layer–layer 1 (L1)–in their respective universe. Many people want to use an L1 like Ethereum. The problem is Ethereum can’t do it all alone.
Imagine a road or highway, well-painted, with signs and concrete barriers on the sides. As the highway gets more usage, the traffic gets worse. It becomes expensive to maintain and each person is spending more time and gas on their journey.
To alleviate the burden, a train track is built above the road, supported by the highway’s concrete barriers. This train is faster, cheaper, fuel-efficient and has more capacity. What if now, instead of taking your car, you could take the train?
In Ethereum’s universe, the L1, Ethereum Mainnet, is like the foundational highway. It’s a great road but it gets clogged and expensive. To help, layer 2 (L2) networks are built on top of this base network like the high-speed train to significantly reduce the cost and time spent on the highway.
Now, you can park your car at an L2 station and he options in your commute.
Think of these L2 stations like a blockchain bridge. There are different exit points along the highway (L1) where you can stop and get onto a train platform. Some stations might be cheaper than others, some might be faster, some might even he rickety elevators and you definitely want to oid those.