Solana is an open-source project implementing a new, high-performance, permissionless blockchain. The Solana Foundation is based in Geneva, Switzerland and maintains the open-source project.
What are SOLs? A SOL is the name of Solana's native token, which can be passed to nodes in a Solana cluster in exchange for running an on-chain program or validating its output. The system may perform micropayments of fractional SOLs, which are called lamports. They are named in honor of Solana's biggest technical influence, Leslie Lamport. A lamport has a value of 0.000000001 SOL.
What is a Solana Cluster A cluster is a set of computers that work together and can be viewed from the outside as a single system. A Solana cluster is a set of independently owned computers working together (and sometimes against each other) to verify the output of untrusted, user-submitted programs. A Solana cluster can be utilized any time a user wants to preserve an immutable record of events in time or programmatic interpretations of those events. One use is to track which of the computers did meaningful work to keep the cluster running. Another use might be to track the possession of real-world assets. In each case, the cluster produces a record of events called the ledger. It will be preserved for the lifetime of the cluster. As long as someone somewhere in the world maintains a copy of the ledger, the output of its programs (which may contain a record of who possesses what) will forever be reproducible, independent of the organization that launched it. Documentation Overview The Solana docs describe the Solana open source project, a blockchain built from the ground up for scale. They cover why Solana is useful, how to use it, how it works, and why it will continue to work long after the company Solana closes its doors. The goal of the Solana architecture is to demonstrate there exists a set of software algorithms that when used in combination to implement a blockchain, removes software as a performance bottleneck, allowing transaction throughput to scale proportionally with network bandwidth. The architecture goes on to satisfy all three desirable properties of a proper blockchain: it is scalable, secure and decentralized.