What is required for airdrop?

Could you please elaborate on the requirements for an airdrop in the realm of cryptocurrency? I'm curious to know what specific conditions or steps need to be met in order to successfully carry out such an event. Is it simply a matter of having a sufficient number of tokens or coins, or are there additional factors that must be considered? Additionally, are there any specific guidelines or regulations that must be followed when conducting an airdrop? I'm eager to gain a deeper understanding of this process and how it fits into the larger cryptocurrency ecosystem.