Blockchain infrastructure platform-as-a-service (PaaS) providers coordinate and maintain access to the infrastructure that powers blockchains, such as dev tools and nodes, bundled with the underlying infrastructure needed to operate their systems, such as cloud storage and security.
Cardano is an open-source, smart-contract platform that aims to provide multiple features through layered design. Its modularization will eventually allow for network delegation, sidechains, and light client data structures. Cardano uses a version of Proof-of-Stake (PoS) called Ouroboros to secure the network and manage the block production process. The network features a native token called ADA that gives stakers a claim on new issuance in proportion to their holdings and allows users to pay for transactions.