3.4. Optimizing Application Performance & Cost

For developers, performance and cost optimization are critical aspects of building successful cloud applications. Efficient code and smart service choices directly impact the application's speed, responsiveness, and operational expenses.

The First Principle is that optimizing application performance and cost stems from writing efficient code, judiciously selecting AWS services, and actively monitoring resource utilization. This ensures your application delivers superior user experience at the lowest sustainable cost.

You will learn about optimizing Lambda performance, API performance, and applying database and caching strategies.

The focus is on comprehending how your developer actions and code directly influence the performance and cost of your application on AWS, which is crucial for the DVA-C02 exam.

Scenario: Your application is running in production, but users are reporting slow response times, and your AWS bill is higher than expected. You need to identify and implement optimizations.

Reflection Question: How does optimizing application performance (e.g., Lambda memory, API caching) and managing costs (e.g., DynamoDB capacity) fundamentally ensure your application delivers a superior user experience at the lowest sustainable cost?