domain
When to reach for Lambda vs ECS, how to design for multi-AZ, cost-aware choices, and the AWS questions that separate paper certs from shipped systems.
Sample questions
These are the kinds of questions you'll drill. Real mock rounds will generate many more — tailored to the exact JD you paste in.
Design a serverless image-processing pipeline on AWS.
When would you pick ECS Fargate over Lambda, and why?
Walk me through your approach to making a service multi-AZ.
How would you control cost on a fast-growing workload?
Reading AWS questions isn't the same as answering them live. You need the rep — the pause, the clarifying question, the moment where you realize you forgot the framework. We put you in that exact spot, then show you what a strong answer would have looked like.
Related topics
React
Hooks, rendering, and real-world patterns.
System Design
Scale, trade-offs, and clear reasoning.
SQL
Joins, indexes, and query plans.
Data Structures & Algorithms
Arrays, graphs, trees, and the classics.
Behavioural
STAR answers that actually land.
Leadership
Influence without authority, grown-up feedback.
Paste the JD, pick your topics, and go. Full session, full feedback, no fluff.
Start now