A suite of tools to manage the deployment of your decentralized apps & services. They provide seeding for your content to ensure it's always available on IPFS too and is quick. There is a free plan all the way up to expensive enterprise plans.
Fleek might not work without centralized DNS.
It might not work without central servers.
It's unknown or not applicable as to how user accounts are handled. It's unknown or is not applicable if Fleek supports cryptocurrency monetization.