# CloudInterviewPrep

> CloudInterviewPrep (cloudinterviewprep.com) is an independent interview preparation site for cloud roles: cloud engineers, solutions architects, platform and DevOps engineers, site reliability engineers, cloud security engineers, customer and forward deployed engineers, and engineers building agentic AI systems on cloud infrastructure. It teaches the reasoning behind cloud interview answers (assumptions, tradeoffs and failure modes), concept first and provider second, across AWS, Google Cloud and Microsoft Azure.

Everything on the site is free to read with no account. Volatile facts such as service names and limits are dated (currently "as of October 2026"). The site never claims a question was asked at a named company.

## Guides

- [Cloud interview questions and answers](https://cloudinterviewprep.com/cloud-interview-questions/): 40 worked cloud interview questions in eight tracks (architecture, compute and Kubernetes, networking, security, data, reliability, cost, agentic systems), each with what it tests, a strong answer outline and a common trap.
- [Cloud system design interview](https://cloudinterviewprep.com/cloud-system-design-interview/): a repeatable framework for the cloud system design round, a 45-minute time plan, disaster recovery strategies compared by RTO, RPO and cost, and a worked regional failover case.
- [Agentic systems interview guide](https://cloudinterviewprep.com/agentic-systems-interview/): how to design and operate AI agents as cloud workloads: agent identity and delegated authorization, MCP tool gateways, sandboxed code execution, durable execution and idempotency, model capacity, cost control, evaluation, tracing and prompt-injection defence, with 12 interview questions and a worked design.

## Tracks

- Cloud architecture and system design: availability zones and regions, caching, queues and back-pressure, consistency and replication, multi-tenant isolation.
- Compute, containers and Kubernetes: VMs, containers and serverless, requests and limits, autoscaling, rollouts, cold starts.
- Networking and traffic: VPC and CIDR planning, DNS, L4 and L7 load balancing, private connectivity, egress and NAT.
- Identity, security and compliance: IAM and workload identity, envelope encryption and key management, secrets, organisation guardrails, audit and data residency.
- Data and storage: object, block and file storage, relational, key-value and analytical stores, partitioning and hot keys, backup and restore.
- Reliability and observability: SLOs and error budgets, metrics, logs and traces, incident response, disaster recovery.
- Cost and FinOps: unit economics, commitments and spot capacity, data transfer and egress, showback.
- Agentic systems and AI infrastructure: agent runtimes, tool gateways, identity and sandboxing for agents, model endpoints and GPU capacity, evaluation and tracing.

## About

- [About and editorial standard](https://cloudinterviewprep.com/about/): who the site is for, what it covers, and how answers are written (assumptions stated, concepts before products, dated facts, no invented interviews).