The Hercules Fitness Center has a website named, HercFit.com. Last year, they released a mobile app available on both Android and iOS. They encourage users to use the app instead of the website because of its advanced capabilities. Currently, they advertise on YouTube and several other sites. When customers click on an ad, it takes them to HercFit.com instead of the app. What web technology can open the mobile app from a click on a web ad?

Deep linking is the correct answer because it allows a link to open a specific page or screen within a mobile app, rather than just the app itself or a website. In this scenario, when a user clicks an ad, deep linking can direct them straight to the HercFit app, bypassing the website. Universal Links (for iOS) and Android App Links (for Android) are specific implementations of deep linking that provide a seamless user experience by using standard HTTP/HTTPS links. Two-factor authentication is a security measure, and a Progressive Web App (PWA) is a website that behaves like a native app but doesn't require installation from an app store.