What are 3 modern ways of acquiring software?

Three modern ways of acquiring software include cloud-based subscriptions, where users pay for access to software over the internet; Software as a Service (SaaS), which delivers applications hosted in the cloud and accessible via Web Browsers; and open-source software, which allows users to download, modify, and use the software for free, often with community support. Additionally, mobile app stores provide easy access to a wide range of applications for smartphones and tablets.