I've successfully recreated the Web Deploy expert for RAD Studio XE2, after having last recreated it in 2006, when it went missing after Delphi 7.
The expert works for 32-bit and 64-bit ActiveX projects. Interested to try it out? Lemme know.
In 2017, with the release of Delphi 10.2 Tokyo, Embarcadero introduced a specialized implementation of the Observer pattern into the System.Classes unit. While it has been in the wild for 9 years, it remains a "hidden" architecture for many, primarily because it serves as the invisible engine behind LiveBindings. Other than live bindings, you can also use the Observer pattern as a way to update component settings to the Windows registry, an .ini file, or persist it elsewhere.
System.Classes