AWS CLF-C02 Study Guide: What to Study in Each Domain

If you are a software professional working with AWS services, the AWS service catalog can feel overwhelming. There are hundreds of services, many with similar names, and new ones appear constantly. The natural response is to memorize information through mnemonics and spreadsheets. However, this approach is not effective for the Cloud Practitioner (CLF-C02) exam.

The exam is structured around four domains: Cloud Concepts, Security and Compliance, Cloud Technology and Services, and Billing, Pricing, and Support. Each domain carries a specific weight in the exam: 24% for Cloud Concepts, 30% for Security and Compliance, 34% for Cloud Technology and Services, and 12% for Billing, Pricing, and Support. Use these weights as a guideline for allocating your study time, but do not rely on them as a precise estimate of the number of questions per domain.

The exam consists of 65 questions, of which 50 are scored and 15 are unscored. There is no penalty for guessing, so make sure to answer every question. The exam guide should be treated as a specification before you start your preparation. It is important to identify and describe AWS services rather than build them. The questions are in two formats: multiple choice (one correct answer, three distractors) and multiple response (two or more correct answers out of five or more options).

To prepare effectively, turn the four domains into study tickets. Each ticket represents a specific skill or concept that you need to master. Identify AWS storage services, understand the AWS shared responsibility model, and so on. Treat each ticket as a mini-project, and work on them based on your knowledge and the exam weightings. Start with the domains that you have the most experience in, and allocate more time to the areas where you need improvement.

Instead of memorizing definitions, practice identifying problems and relating them to the appropriate AWS services. Write down the problem in plain English, then name the service that solves it. For example, a team wants code to run whenever a file lands in a bucket, with no servers to manage. The solution is AWS Lambda, triggered by an Amazon S3 event.

For each service you study, create a four-question card in your own words. The questions should cover the problem the service solves, its nearest neighbor and what separates them, what you are responsible for when using the service, and how it is charged. These cards will help you understand the relationships between services and the responsibilities associated with them, which are crucial for the exam and real-world scenarios.