It is now seen live in more than 200 countries and can be streamed live online. The Academy Awards ceremony is the oldest worldwide entertainment awards ceremony. Its equivalents – the Emmy Awards for television, the Tony Awards for theater, and the Grammy Awards for music – are modeled after the Academy Awards.
The first Academy Awards presentation was held on 16 May 1929, at a private dinner function at the Hollywood Roosevelt Hotel with an audience of about 270 people. The post-awards party was held at the Mayfair Hotel.
The cost of guest tickets for that night's ceremony was $5 ($71 in 2017 dollars). Fifteen statuettes were awarded, honoring artists, directors and other participants in the film-making industry of the time, for their works during the 1927–28 period. The ceremony ran for 15 minutes.
According to wikipedia