Kaleido is a Blockchain-as-a-service platform that lets you create a permissioned blockchain in a few clicks.
The default explorer that comes with Kaleido is private, meaning that you have to login in your account to see the data.
If you'd like to have your users be able to easily interact with your blockchain, or see the state of their transactions, you will need a public block explorer.
With Ethernal, you can generate one, branded to your organizations, and hosted on your domain, in a couple of minutes.