First there hr call me and asked some questions about who am I and how much experience I have in this field and then she send send me details about internship

If you make it through telephonic round you will have a technical interview. I was asked about my experience on my resume and basic cloud concepts. Since I already had some experience in AWS I was asked a few technical questions on that as well Overall they just select candidates based on interest and fundamental knowledge. If you present yourself well and have basic understanding of AWS and cloud, there is nothing to worry about!