Chapter 9
First, you must consider which storage solutions are best suited to the different types of data. An Azure SQL database seems like the right choice for the day-to-day interactive data, but the generated PDF quotes would be better stored in an Azure Storage account.
As transactions will not be high, a GPv2 account set as a Hot access tier would offer adequate performance, with documents stored in blob containers. ZRS should be enabled on the storage account to protect against a zone failure.
A second storage account set as an Archive access tier should also be created to store quotes older than 6 months. The main storage account will have a life cycle management set up to move documents that have not been accessed for 6 months to the archive account. LRS will be sufficient for this storage account.