Ardor was heavily criticized when it was launched to the market. It really had a lot of flaws. The biggest shortcoming was the problem of trust. They have overcome this problem with special algorithms.
Now let's come to the features of Ardor;
1) Proof of Stake: It can perform efficient operations without the need for energy efficient and expensive systems.
2) Multi-chain platform: Every chain in the Ardor ecosystem is unique and customizable. These chains have their own characteristics.
3) Interoperability of sub-chains: Sub-chains are compatible in transactions between each other.
4) Scalability: The processing intensity is reduced as follows; The chains are separated for each transaction, reducing the transaction density. After the processes are completed, the chains are removed by pruning.
Ardor's dev team did a pretty good job. They did a great job in a short time. It has now become a highly preferred project. Their website has 2 tabs named testnet and mainnet. You can learn how the system works in the testnet.
As a result; Ardor is a project that stands out with its customizable features, its tokenized transactions are compatible with all exchanges and has a strong infrastructure architecture.