Udacity is an online education provider that offers courses, some built in partnership with companies --- such as Google, Facebook, or Intel --- and other organizations around the world. Currently, Udacity boasts an active catalog of more than 200 online courses created by Udacity and its partner institutions.
Udacity courses consist of pre-recorded video lectures that you can watch at any time of the day or night convenient for you.
Free Udacity courses consist of video lessons and auto-graded quizzes.
Udacity’s paid microcredential is known as a Nanodegree. Nanodegrees are a collection of Udacity courses + human-graded projects + mentor support + certificate. Nanodegrees are available on either a monthly subscription basis or a single discounted payment for the whole nanodegree.
If you cannot afford the cost, Udacity offers a limited number of scholarships for particular Nanodegrees.
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