I have read the Technical Notes here https://kb.fortinet.com/kb/documentLink.do?externalID=10734
but I think it doesn't apply for my version of fortigate.
Based on online help, nothing seems to have changed since 5.2:
The Fortinet Security Fabric brings together the concepts of convergence and consolidation to provide comprehensive cybersecurity protection for all users, devices, and applications and across all network edges.
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