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IoT System Design Case Studies

InterviewSkool tracks 4 IoT case studies with architecture diagrams, scale estimates, and deep dives.

Filter by company to see which companies ask IoT questions, or browse all case studies.

By Topic

Distributed Systems (90)Security (32)Event Driven (14)Real-time (51)Storage (43)CDN (9)Media (3)Search (19)Media Streaming (3)Messaging (10)Payments (11)Booking System (6)Algorithms (20)Geospatial (11)Analytics (11)Data Pipelines (42)Databases (38)API Design (41)Caching (37)Fintech (14)Concurrency (8)Ads (8)AI / ML (23)Scheduling (20)Observability (11)Frontend (8)E-commerce (11)Collaboration (3)Rate Limiting (2)Networking (5)IoT (4)

By Company

Amazon (2)Apple (1)Microsoft (1)NVIDIA (1)OpenAI (2)Walmart (1)
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Title
Difficulty
Companies
Breakdown / Solution
Intermediate
AmazonMicrosoft+3
Advanced
OpenAI
Intermediate
Apple
Advanced
Amazon

Frequently Asked Questions

What is IoT in system design?

IoT is a core system design topic covered in 4 case studies on InterviewSkool. It appears frequently in FAANG interviews, especially at Google, Amazon, and Meta.

How should I prepare IoT for system design interviews?

Study the case studies above, focusing on architecture trade-offs, scale estimates, and API designs. Practice explaining your decisions aloud — this is exactly what interviewers evaluate.

Practice with a Mock Interview

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