Additional information to assist with determining if you need a letter from the conference organisers: https://immi.homeaffairs.gov.au/entering-and-leaving-australia/entering-australia and https://usa.embassy.gov.au/travel-to-australia
Overseas guests who are only attending the conference as visitors should not need a letter, they can apply for a Visitor Visa 600 business stream, ETA 601.
https://immi.homeaffairs.gov.au/visas/getting-a-visa/visa-listing/electronic-travel-authority-601
For these visa types the registration confirmation should be sufficient.
Should you require a letter, please select “yes” when asked this question after selecting your tickets here, or alternatively can fill out our invitation form here. Due to the information required, only one ticket can be purchased at a time. Thank you for your understanding. By purchasing a ticket and providing your information in the additional fields, you hereby give permission for this information to be passed along to the event organisers for creation of your name badge.
