Although Portugal are tough to break down, this comes at a cost, with few goals at the other end.
They have to rely on moments of magic - mainly from their talisman Cristiano Ronaldo - to score. In a sense, the team are solid rather than spectacular.
Coach Fernando Santos is likely to swop their traditional 4-3-3 for a flexible 4-4-2, which would feature Nani in support of Ronaldo up front but licensed to drift to the right.
They have the tournament's best player plus a healthy mix of experienced campaigners, such as Nani and Ricardo Quaresma, and new talent, including 18-year-old Renato Sanches. But key midfielder Joao Moutinho has struggled with injuries in recent months.
Ronaldo's form will decide how far the team go.
Fifa ranking: 8
Manager: Fernando Santos
Squad - Goalkeepers: Anthony Lopes, Eduardo, Rui Patricio. Defenders: Bruno Alves, Cedric, Jose Fonte, Eliseu, Pepe, Raphael Guerreiro, Ricardo Carvalho, Vieirinha. Midfielders: Adrien Silva, Joao Mario, William Carvalho, Andre Gomes, Danilo Pereira, Renato Sanches, Joao Moutinho. Forwards: Cristiano Ronaldo, Eder, Nani, Rafa, Ricardo Quaresma.
Key player: Renato Sanches. With Cristiano Ronaldo unlikely to be fully fit, the 18-year-old is expected to drive the team and find the net from central midfield. He is predominantly a box-to-box player, known for his strength, passing ability and composure on the ball. He likes to dictate the tempo and his commanding presence and braided hair have drawn comparisons to legendary Dutchman Edgar Davids.