Blockchain in ecommerce enhances transparency, security, and efficiency in digital transactions. It enables decentralized payment systems, reduces fraud, and supports smart contracts for automated order processing and dispute resolution. Blockchain can track product origins and logistics, improving supply chain visibility and consumer trust. It also enables tokenized loyalty programs and NFT-based digital goods. By eliminating intermediaries, blockchain reduces transaction fees and provides faster settlements. Ecommerce platforms adopting blockchain gain competitive advantages through improved data security, operational efficiency, and customer satisfaction.