I'm preparing for college placement interviews and want to strengthen my AWS fundamentals for Cloud and DevOps roles. I'm already comfortable with the core services and have some practical experience, but I want to improve how I explain concepts and solve technical interview scenarios. I'm looking for a beginner-to-intermediate learning path using free documentation, videos, courses, GitHub projects, and hands-on labs. Useful topics include EC2, S3, IAM, VPC, RDS, Lambda, CloudWatch, serverless architecture, common interview questions, and small projects that demonstrate practical understanding. Since the role can vary between companies, broad preparation and the ability to explain trade-offs are especially important.
3 Answers
A small serverless project is a cost-effective way to explore several common services. You could combine API Gateway, Lambda, S3, DynamoDB, SQS or SNS, Parameter Store, and CloudWatch, adding IAM policies and basic monitoring. Other useful services include Step Functions, Cognito, KMS, Route 53, and Secrets Manager. Stay within the free usage limits, set billing alerts, and watch out for accidental loops or resources that continue running.
Practice questions should focus on reasoning rather than definitions alone. Be ready to explain differences such as S3 versus EBS, when to use Lambda instead of EC2, how IAM roles work, and how you would design a highly available application. Talk through your assumptions, security considerations, scaling needs, and the trade-offs behind your choices.
For campus interviews, hands-on practice will probably help more than trying to memorize every AWS service. Build a small project using services such as S3, EC2, IAM, and Lambda, then document what you built and why you chose each component. The official AWS documentation and free video courses are good references, but troubleshooting your own permission or deployment mistakes will make the concepts stick.
That makes sense. I'm already comfortable with the basics and have used some services practically; I mainly want to become better at explaining my decisions and answering interview-style questions for Cloud and DevOps roles.