Flash sales are promotional events where products or services are offered at significantly reduced prices for a very limited time, often ranging from a few hours to a couple of days. These sales create a sense of urgency among consumers, encouraging quick purchasing decisions to take advantage of the discounts before they expire. Flash sales are typically used by retailers to clear excess inventory, attract new customers, or boost short-term revenue. An example of flash sales can be seen with Groupon, an online marketplace known for offering daily deals on local services and goods. Groupon partners with businesses to provide limited-time offers at discounted rates, enticing users to purchase quickly due to the time-sensitive nature of these deals. This model not only benefits consumers through substantial savings but also helps businesses increase visibility and customer traffic in a competitive market.