There is no one definitive answer to this question, as the concept of guerilla marketing can be interpreted in a variety of ways. Broadly speaking, guerilla marketing is a marketing strategy that employs unconventional, low-cost methods to promote a product or service. This can include tactics such as ambush marketing, viral marketing, and street marketing.
Guerilla marketing often relies on generating word-of-mouth buzz and achieving maximum exposure with minimal resources. This type of marketing can be particularly effective for small businesses and start-ups that have limited marketing budgets.
If you're interested in learning more about guerilla marketing, there are a number of excellent resources available online, including this informative article from Entrepreneur magazine: https://www.entrepreneur.com/article/287977.