In centralized system like paypal and VISA, the number of transactions are really high where as this is an issue in decentralized system.

The decentralized network enables **trustless network** but at the same time it poses "**scalability**" issue. This issue should be addressed in order to bring blockchain to main stream. Before the various crypto projects & blockchain technology can find true and wide scale adaptability, there is a requirement to improve the scaling capacity of blockchain, which can be done by:-
* ** Improving the Tier-1 scaling solution, that is scaling capacity of the blockchain has to improve in order to scale the on-chain transaction at a higher rate.
* ** Improving the Tier-2 scalability which refers to the development of off-chain solutions.
So which scaling solution do you think blockchain projects should more focus on ?