System design interviews have become an integral part of the hiring process for many tech companies, especially for senior and architect roles
Preparing for these interviews can be challenging due to their broad scope and complexity but good resources can help you master system design concepts and excel in your interviews
Here are the 15 best resources to prepare for system design interviews in 2025, categorized into websites, online courses, books, blogs, and newsletters
ByteByteGo is a popular System design resource particularly known for its visual approach to explaining system design concepts
Codemia.io offers more than 120+ system design problems with AI assistance and feedback when you submit your solution
DesignGurus.io offers Grokking the System Design Interview and Grokking the Advanced System Design interview courses
Exponent offers mock interviews, video lessons, and detailed guides on various system design topics. Their courses are created by industry professionals with experience at top tech companies.
Udemy offers numerous courses on system design, with practical examples and real-world scenarios. Their courses are affordable and flexible.
Educative.io offers a range of system design courses that are ideal for those who prefer reading over watching videos. They also have AI-powered courses.
System Design Interview --- An Insider's Guide by Alex Xu is a must-read book for anyone preparing for system design interviews.