App Clips may be the entry point for retail that have never jumped the App service to cater to on-premise , proximity temporary apps.
They are small (10 mb apps) that doesn’t need to be downloaded from the App Store and can be used instantly.
Even though Android has thé équivalant Instant Apps, such features would enhance greatly and bring up to speed a feature that will be ubiquitous. Even more so than regular full on apps (which are still required even for an App Clip to be attached to it).
If it is possible to do so in Ti, an Example on Axway’s Developer blog would spread it faster among us developers.