Stellar is an open source protocol which is decentralized for the digital currency to the fiat currency. It allows for the cross-border transaction between all the pair of currencies. The Stellar development foundation which is a non-profit organization supports the Stellar protocol.
The network of the Stellar is based on the blockchain technology and is a publicly distributed ledger. It also allows for the transfer of not only payments but also the transfer of value. The lumens (XLM) is the native digital asset of the Stellar. In simple words, it can be said that the Stellar is the network of the payment and the lumens (XLM) is its cryptocurrency.
Stellar was later launched on the payment network which was decentralized and the protocol along with the native currency. When the network was launched, it had Stellar which amounted to 100 billion out of which 25 percent would be given to the non-profit organisations who were working toward the financial inclusion. The cryptocurrency which was initially named as the Stellar but was later renamed as the lumens or the XLM.