The courses are well structured. You learn the necessary skills in small steps to complete a project at the end and submit it for examination. It is designed intuitively. You quickly get to the previous steps to refresh your memory on a topic. You can see which steps you have already taken and roughly how much time is needed for the next step. In almost every step, there are small queries or small tasks. This allows you to implement what you have learned and reflect on how well you have understood the topic. If you have any questions, mentors will be available and the entire Udacity community will help you in the Knowledge Base. I was also able to use what I learned immediately and often at work

Modern, nice documentations and the "Do-on-project" way to learn. I like the way Udacity lets their students improve all the knowledge by assessing their work.

Flexibility while maintaining person to person support, very quick responses to questions or submitted projects