System design
Microsoft System Design Questions
Every system design problem candidates reported at Microsoft between September 2025 and September 2026, most-asked first. Each one links to a full solution. Tick them off as you go.
Practice a Microsoft system design round with me
I'm Alex. I'll pick one of these Microsoft questions and interview you on it: scope, design, and deep dives.
Companies
Uber12
JPMorgan11
Snowflake9
Databricks7
Capital One7
Flipkart4
Visa4
Adobe4
Anduril1Topics
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+1+4Duplicate reports of the same problem are merged and counted.
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What system design questions does Microsoft ask?
Candidates reported 24 distinct system design problems at Microsoft between September 2025 and September 2026, including Design an Event Booking System, Design a Distributed Key-Value Store, Design a High-Concurrency Incident Ticket Correlation Platform.
How to prepare for Microsoft system design interview?
Start with the Microsoft problems reported most often, work through each full solution, then practice explaining a design end to end under time pressure in a mock interview.
What is the difference between HLD and LLD at Microsoft?
HLD (High-Level Design) focuses on system architecture, scalability, and component interactions. LLD (Low-Level Design) dives into class diagrams, API contracts, and database schemas. Microsoft tests both.