According to ITHETHAO.vn source, MSI 2024 has not determined the number of teams attended. The tournament roadmap still includes 2 play-in rounds (Swiss format) and Play-off (Branch-Branch Formula).

LPL (China) and LCK (Korea) will certainly have 2 seed teams participating in the play-off round. In addition, the MSI 2024 Play-off round will also have the presence of the No. 1 seed team from Europe (LEC) and LCS (North America). Meanwhile, VCS (Vietnam), LLA (Latin America), CBLOL (Brazil) will have a representative playing from the play-in round. The number of MSI 2024 in PCS (Asia – Pacific) has not been determined because it has just expanded LJL (Japan).
Regarding “Swiss format”, in the first round, the teams will be classified as usual. After the first round, the teams with the same winning difference will confront each other. The team that has 2 wins will continue. Any team that has 2 losses will be eliminated. This means that each team will have at least 3 chances to win the right to enter the round.
The MSI 2024 championship team will certainly get a ticket to Worlds 2024 and count as an additional capacity for their area. The second most good achievement in MSI 2024 will receive an extra seed. To ensure that the team with Worlds 2024 will still try to play in the domestic tournament, they have to enter the summer play-off round of their regional tournament. Note, this regulation does not apply to LEC because the team will go straight to their regional finals.
Suppose if this is the MSI 2023, JDG will hold the ticket for Worlds 2023, and the LPL area will have a total of 4 capacity in the tournament. At the same time, the area with the second most good achievement – LCK in MSI 2023 – will have an additional one at Worlds 2023, a total of 4.