Dynamic software model checking consists of adapting model checking into a form of systematic testing that is applicable to industrial-size software. Over the last two decades, dozens of tools following this paradigm have been developed for checking concurrent and data-driven software. Compared to traditional software testing, dynamic software model checking provides better coverage, but is more computationally expensive. Compared to more general forms of program verification like interactive theorem proving, this approach provides more limited verification guarantees, but is cheaper due to its higher level of automation. Dynamic software model checking thus offers an attractive practical trade-off between testing and formal verification. This paper presents a brief introduction to dynamic software model checking.