Hi Experts,

When we execute the Delta sync, i could see below steps are executing in AADSync connectors.

[1] AD Connector - Delta Import
[2] AAD Connector - Delta Import
[3] AD Connector - Delta Synchronization
[4] AAD Connector - Export
[5] AAD Connector - Delta Import
[6] AAD Connector - Delta Synchronization
[7] AD Connector - Export

Could you please help me to understand what will happen on each steps. Or is there any blog which already has these information?

O boy.  Are you in trouble or what? Suggestion, read some literature on MIIS or ILM or FIM

[1] AD Connector - Delta Import: Copy all changes from last run (delta) from AD into Connector Space (please don't ask what is the connector space) (Example a new user was created, it will be imported into Connector Space)
[2] AAD Connector - Delta Import: Same as above from Azure
[3] AD Connector - Delta Synchronization: Consolidate the changes between Connector Space and Metaverse
[4] AAD Connector - Export: Copy any changes Metaverse has and Azure does not to Azure. Write to Azure
[5] AAD Connector - Delta Import: Also called "Confirmation Export". Makes sure what we wrote on previous step is was successful. 
[6] AAD Connector - Delta Synchronization: Confirm with Metaverse

[7] AD Connector - Export: Same as above

In other words, you are synchronizing you AD with Azure.

This diagram, explains the relationship between Source, ConnectorSpace (CS) and Metaverse (MV)

Here is an article that explains better the run profiles.

http://social.technet.microsoft.com/wiki/contents/articles/1147.ilmfim-run-profile-definitions.aspx