Most of the major search engines utilize an algorithm to determine the rank levels. Even though criteria is different for every engine, all engines share several commonalities. Overall, the most important traits to earn a rank is the type and amount of content provided on a given website, the level of optimization done on the site, and the popularity of the website (link popularity/PageRank).
When you ask your friends which online video platform they use, the answer you probably hear the most is YouTube. YouTube is the largest video hosting platform, the second largest search platform after Google, and the third most visited website in the world. Every single day, people watch over five billion videos on YouTube. It's also free to upload your videos to YouTube and optimize them for search.