The Amazon AWS Certified Solutions Architect – Associate (SAA-C03) exam is designed for individuals who want to prove their ability to design and deploy secure, reliable, and cost-efficient applications on AWS. One key topic in the exam is Design High Performing Architectures, which focuses on selecting the right AWS services like auto scaling, caching, and load balancing to ensure high performance and responsiveness. A common problem many candidates face is confusion over choosing the correct service for specific performance needs—for example, deciding between EC2 and Lambda for application hosting. This issue can be solved by practicing real-world scenarios and understanding the purpose of each service. ExamTopics Pro is highly recommended for preparation, as it provides real exam-like AWS Solutions Architect Associate questions with detailed explanations that help build a deeper understanding of AWS concepts. To succeed, candidates should focus on learning core AWS services, use free AWS training resources and whitepapers, practice questions regularly, and get hands-on experience by building projects in the AWS environment.