Description: An embedded document is a type of data structure that is nested within another document in a NoSQL database. This feature allows for the creation of complex and hierarchical data structures, facilitating the representation of relationships between different entities without the need for multiple queries. Instead of storing data in tables as in relational databases, embedded documents allow related data to be grouped within a single document, improving the efficiency of information retrieval. Embedded documents are particularly useful in scenarios where data has a one-to-many relationship, such as a user having multiple addresses or a product having several reviews. This storage method not only optimizes performance but also simplifies the database structure, making it more intuitive and easier to manage. Additionally, embedded documents are flexible, allowing developers to modify the data structure without affecting other parts of the database, which is a significant advantage in agile development environments.