Ethereum is scalable already. Layer 2 solutions like https://zksync.io/ and https://loopring.org/#/ are already live and allow 2000 transactions per second. This is based on ZK-rollups and provides the same level of security as the base layer. This technology can be used for trades or transfers.
Another exciting technology that is coming this year is optimistic rollups, which will provide the same level of scalability for arbitrary smart contracts.
Another exciting technology that is coming this year is optimistic rollups, which will provide the same level of scalability for arbitrary smart contracts.