Google Drive
How to connect Google Drive to e-invoices?
Short answer
Use Google Drive as a working storage with clear folder structure, rights, file naming, XML validation and archive trail. There should not be a single uncontrolled archive without metadata.
Structure
Folders by status
Received, validated, for correction, sent to the accountant, posted and archived.
Rights
Not everyone everything
Accountant, owner and employee should have different approaches.
Validation
Automatic control
The file in Drive should trigger a validation or at least a review workflow.
Audit
Drive alone is not enough
You need to know who added, reviewed, moved and exported the file.
Conclusion
Not legal advice. Machine-translated answer, not yet manually reviewed. For the exact wording, see the Slovak original.