What is a welcome incentive?

Could you elaborate on the concept of a "welcome incentive"? Is it a marketing strategy designed to attract new customers or users? How does it differ from other types of promotions or bonuses? And in the context of cryptocurrency and finance, are there specific examples of welcome incentives that are commonly offered to new investors or traders? Is it a common practice in this industry, and what are the benefits and drawbacks of offering such incentives?