Google I/Oのイベント参加の方法について

リンク先のFAQに下記説明があります。
要約すると参加するには、招待もしくは抽選ですチケットを入手（2種類の有料チケット）を取得しなければならないようです。
抽選チケットは2/27までに申込が必要なようですので、もう締め切りを過ぎているので今からでも参加したいとのことであれば、Google関係者から招待状を入手するしか方法は無いと思います。

How can I get my hands on a ticket?

There are two ways to get a ticket: by applying to the ticket drawing or via invitation.

How does the ticket drawing work?

Anyone interested in development as a career or as a passion is welcome to apply between 10am PST on February 22nd, 2018 and 5pm PST on February 27th, 2018. The order in which ticket applications are received has no bearing on the final outcome — so no rush, you'll have plenty of time to apply! Once the window closes, we'll randomly select applicants from among all of the qualified applications and notify those selected via email on February 28th, 2018.

To submit an application you’ll need to:

Sign in with a Google account or Gmail address of your choosing.
Complete the required form fields, including which ticket type you’re applying for (General Admission: $1,150; Academic Admission: $375).
Provide payment details. Your card will only be charged if you’re selected on February 28th. If you’re not selected, the pre-authorization payment will be automatically released by your bank within 7 days.

Once you've successfully completed the application, you’ll reach a confirmation screen and receive an email confirming your application submission shortly thereafter.

2018年4月23日 0時46分