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System Design at Microsoft

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System Design at Microsoft

Microsoft system design interviews cover collaborative productivity tools, cloud infrastructure, messaging systems, and calendar/scheduling services. They test your ability to design enterprise-grade, highly available systems.

9 guides available•Interview focus: Collaborative editing, messaging, calendar systems, distributed infrastructure, and cloud services.

Microsoft System Design Interview Guides

Dec 22, 2025•22 min•
hard
How to Design a Distributed Task Scheduler - Complete System Design Guide
Master distributed task scheduler system design for your next big tech interview. Covers task submission guarantees, push vs pull worker models, leader election...
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Dec 20, 2025•22 min•
hard
How to Design a Real-Time Collaborative Editor like Google Docs - System Design Guide
Master collaborative editor system design for your next big tech interview. Covers Operational Transformation vs CRDTs with the math explained, WebSocket archit...
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Dec 12, 2025•20 min•
medium
Android System Design: Design a Notes App
A complete Android system design guide for designing a notes app like Google Keep or Apple Notes. Covers offline-first architecture with Room, sync conflict res...
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Dec 8, 2025•18 min•
medium
How to Design a Pastebin Service - Complete System Design Guide
Master Pastebin system design for your next big tech interview. Covers unique key generation approaches and their trade-offs, content storage in object storage ...
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Nov 28, 2025•22 min•
hard
How to Design a Real-Time Messaging System - Complete System Design Guide
Master real-time messaging system design for your next big tech interview. Covers WebSocket connection management, cross-server message routing with Redis Pub/S...
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Nov 10, 2025•18 min•
medium
How to Design Google Calendar - Complete System Design Guide
Master Google Calendar system design for your next big tech interview. Learn database schema design, the right way to handle timezones, how recurring events act...
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Oct 20, 2025•22 min•
hard
How to Design Instagram / a Social Feed - Complete System Design Guide
Master Instagram and social feed system design for your next big tech interview. Learn the hybrid fan-out approach, how Instagram's real tech stack works, feed ...
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Oct 10, 2025•20 min•
hard
How to Design a Chat System (Real-Time Messaging) - Complete System Design Guide
Master chat system design for your next big tech interview. Learn WebSockets, message delivery guarantees, Cassandra schema design, fan-out for group chats, pre...
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Oct 1, 2025•18 min•
medium
How to Design a Rate Limiter - Complete System Design Guide
Master rate limiter system design for your next big tech interview. Learn every algorithm — token bucket, sliding window, leaky bucket — plus Redis-backed distr...
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