Azure Information Protection
An Azure service that is used to control and help secure email, documents, and sensitive data that are shared outside the company.
515 questions
The tag used in the question and the actual question are unrelated. But still I will try to answer as per my understanding.
Azure has some services that can stored Structured and Non-structured data. Azure SQL DB can be used to store structured and Azure Cosmos DB for non-structured. I'm not aware of any service specifically designed for aggregated but generally we can use Azure SQL DW where Fact tables can have aggregated data.
Metadata is just details about some data. E.g. File created, modified, size, type are metadata details of a file stored in Azure Blob storage.
Below MS Learn module explains on type of data and what services can be used for what type of data.