The term "yotta" is a metric prefix that represents a factor of 10^24, or one septillion. It is the largest official SI (International System of Units) prefix and is used to quantify extremely large amounts, such as data storage or scientific measurements. For example, a yottabyte is equal to one trillion gigabytes. Yotta is part of a series of prefixes that include kilo, mega, giga, tera, peta, exa, and zetta, each representing progressively larger quantities. These prefixes help simplify communication about large numbers in fields like computing, physics, and engineering.