Cloud infrastructure plays a vital role in business operations by providing scalable and flexible IT resources. It enables companies to access computing power, storage, and applications over the internet, reducing the need for significant upfront capital investments in physical hardware. This flexibility allows businesses to scale resources according to demand, improve cost-efficiency, and enhance collaboration through remote access to tools and data. Additionally, cloud services support business continuity through reliable backups and disaster recovery solutions, ensuring that organizations can operate smoothly in various circumstances.