This now quite old article explains the differences.

In essence the GDI being the first direct injection n/a engine replaced the Duratec. The Ecoboost shares the same bore centres but is substantially different to handle turbo power.

Richard

2018 Roadster 3.7
1966 Land Rover S2a 88
2024 Royal Enfield Guerrilla 450
1945 Guzzi Airone