Before making a Progressive Web App (PWA) available to users, several testing techniques can be employed to ensure its functionality and performance. These include browser testing, device testing, and network testing. Through browser testing, the PWA can be checked for compatibility and consistency across different web browsers. Device testing allows for the identification and resolution of any issues specific to certain devices or operating systems. Network testing is crucial to assess how the PWA performs under various network conditions. Additionally, automated testing using tools like Lighthouse can be used to detect any coding or performance issues. By thoroughly testing a PWA, developers can ensure that it meets the required standards and delivers a seamless user experience.