Wales face Spain and the Republic of Ireland during the international break, with the latter being played as a competitive Nations League fixture.
Giggs' side made a great start to the Nations League, beating Republic of Ireland 4-1 in Cardiff, and the former Manchester United winger believes that it is a brilliant idea to add a competitive side to the tournament.
If they are successful in Group B4 of the league, Wales earn promotion and will also enter the Euro 2020 play-offs, if they have not already qualified.
"I like it," Giggs told 'UEFA.com'. "I think if you go through all the groups and all the pots, they'll be really competitive.
"You look at all the groups and you think, 'I don't know who's going to win that one'.
"I think that's what UEFA wanted, to have it more competitive, and I think that's what you've got.
"Just look at our group: ourselves, Ireland, Denmark. It's a really competitive group.
September 9, 2018
"It's great for a manager, it's a new concept, a new start, it will take a bit for the players and the fans to get their head around.
"But I think once they do, they'll really enjoy it because of what I said, really competitive games."