The tournament itself will be played in 12 different cities. Every national team will hope to qualify, though only 24 teams will make it there.
Qualification for Euro 2020 will begin in March 2019 and end in November 2019. The two best teams in each group will qualify directly for the tournament, while the four other entrants will be decided via play-offs.
This Sunday the groups will be determined through a draw conditioned by each nation's performance in the UEFA Nations League. The four teams that reached the finals of the competition - Netherlands, England, Switzerland and Portugal, the reigning European champions - will be in the same pot and be divided between Groups A, B, C and D. Belgium, France, Spain, Italy, Croatia and Poland, for their part, will be placed between Groups E and J.
Germany, Denmark, Iceland and Wales are the biggest names in Pot 2, which also includes Bosnia and Herzegovina, Ukraine, Sweden, Russia, Austria and Czech Republic. Each of them will be the second team in each of the ten groups.
Teams in Pots 3, 4, and 5 will occupy the third, fourth and fifth positions in each group while the five nations in Pot 6 - Latvia, Liechtenstein, Andorra, Malta and San Marino - those with the lowest ranking - will enter Groups F, G, H, I and J, the only ones with six teams.