How does an SVM work, and what does the kernel trick actually buy you?

SVMs sort the candidates who memorized 'maximize the margin' from those who can explain how a kernel delivers non-linear separation without ever touching the high-dimensional space. Here is the answer that lands the second signal.

Updated Sep 2026 · Grounded in real GenAI, LLM, and AI/ML engineering interview loops and written to a senior-engineer editorial bar.