•TOPIC

Ads System Design Case Studies

InterviewSkool tracks 8 Ads case studies with architecture diagrams, scale estimates, and deep dives.

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

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Companies

Netflix6TikTok2Apple1Meta1Microsoft1Pinterest1Rippling1

Topics

Distributed Systems 90Real-time 51Storage 43Data Pipelines 42API Design 41Databases 38Caching 37Security 32AI / ML 23Algorithms 20Scheduling 20Search 19Event Driven 14Fintech 14Payments 11Geospatial 11Analytics 11Observability 11E-commerce 11Messaging 10CDN 9Concurrency 8Ads 8Frontend 8Booking System 6Networking 5IoT 4Media 3Media Streaming 3Collaboration 3Rate Limiting 2
Ads✕Clear all
Ad Click and Impression Aggregator
6 min readAdsAnalyticsData Pipelines
Advanced+2▶ Mock
Ad Creative Relationship Processing with an External Model API
5 min readAdsData PipelinesAI / ML
Intermediate▶ Mock
Ad Frequency Capping Service (Netflix Ads)
7 min readAdsReal-timeCaching
Advanced▶ Mock
Ad Budget Pacing System
5 min readAdsReal-timeDistributed Systems
Advanced▶ Mock
Ads Audience Targeting System
5 min readAdsData PipelinesCaching
Advanced▶ Mock
Ads Platform Data Model (OLTP and Reporting)
5 min readAdsDatabasesAnalytics
Intermediate▶ Mock
Demand-Side Ad Platform: Campaigns, Targeting and Edit History
3 min readAdsDatabasesAPI Design
Intermediate▶ Mock
Publisher Configuration Rules and Safe Global Rollout
5 min readAdsDistributed SystemsCaching
Intermediate▶ Mock

Frequently Asked Questions

What is Ads in system design?

Ads is a core system design topic covered in 8 case studies on InterviewSkool. It appears frequently in FAANG interviews, especially at Google, Amazon, and Meta.

How should I prepare Ads 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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