NewMicrosoft Purview · Exchange Online

Microsoft Purview: Data Lifecycle Management - Azure PST Import

Organizations will gain a new migration method to import PST files directly from Azure Blob Storage into Exchange Online mailboxes. This provides an additional pathway for mailbox migration with built-in validation and analysis phases.

Action required: When feature becomes available, evaluate Azure PST Import as a migration option for PST data currently stored in Azure Blob Storage; plan migration batches using the two-step analysis-and-execute pattern.

Key dates

<UNKNOWN> — general_availability (Feature is currently in development; specific GA date not provided)

Microsoft's description

Azure PST Import is a migration method that enables PST files stored in Azure Blob Storage to be imported directly into Exchange Online mailboxes. It follows the standard two‑step Exchange Migration Service pattern: an initial analysis phase to validate and assess PST data, followed by execution of the actual migration. The process also involves creating a migration endpoint, running an analysis-only migration batch, using the analysis results to configure the final batch, and then starting the batch to import PST content into target mailboxes.

View on Microsoft roadmap →