Probably the biggest bonus is that the Football Ferns will play three matches at home coinciding with the event, against the top seeded team and another still to be confirmed guest nation.
It's a rare opportunity for the Ferns on these shores and the concurrent camp scenario will be invaluable ahead of the World Cup proper (July 20).
Thailand and Chinese Taipei are the first two confirmed nations for the playoff tournament.
The other teams will be decided in continental tournaments this month, aside from the European representative which will be known in October.
The format will see two group of three teams and one section of four.
In the smaller group the seeded team will face the winner of a knockout match between the other two countries for a World Cup berth. The other group will have two semifinals then a decider, with the two highest ranked teams seeded to meet in the final.
"The decision in 2019 to expand the FIFA Women's World Cup from 24 to 32 teams, has already had a significant impact on the wider growth and development of the women's game," said Fifa chief women's football officer Sarai Bareman. "More nations now have the chance to play on the world's biggest stage and this all starts with the playoff tournament."
Nine teams have already secured their places at the Women's World Cup, alongside hosts New Zealand and Australia.
China, Japan, Korea Republic, Philippines and Vietnam have qualified from Asia, with France, Spain, Sweden and Denmark confirmed as the first of 11 European nations.