The difference between parfum and EdP is a slightly lower perfume concentration. 30 ml is a small packaging, but that also means you can take it in your carry-on when traveling.
From AllBeauty
Dolce&Gabbana - The One Gold 30ml Eau de Parfum Intense Spray for Women
Wowcher
Dolce & Gabbana The One Gold Eau De Parfum Intense 30Ml | Wowcher
This product is also available at 3 unverified stores.