AEP maintains datLake and profile store separately. dataLake can be queried using the dataset name. how do we query the records from profile store ?

Is it possible to create a dynamic segment based on attributes from AEP schema & FAC audience attribute together in same equation ? 

does FAC support creating audience of audiences ?

In FAC if there are two audiences, and AJO requires reading attributes from each FAC audience . Currently AJO has limitation of reading one audience per journey. Thinking of creating master audience in FAC which combines both FAC audiences into single. Are there any better approaches to handle this ...

Adobe analytics web & app are two separate report suite. As a result they are two separate schema and hence two separate dataset in AEP. Is there a known limitation or official document that says that adobe analytics connector can only connect to one report-suite (so one schema) in the lower sandbox...

when a new field is introduced in the schema after it already been enabled for the profile and have the data ingested, how do we ingest the historical data for newly introduce field ? One approach I am ware is create a new dataSet with primary key and new field, and then use that dataset to ingest b...

filtering is reserved only for live data, not for backfill

for the target mobile app server side what the name of api call app dev need to make ? Like in website its called delivery-API/Interact call. What do we call that function for mobile target SDK server side implementation ?

For server side websdk implementation, the front end dev need to make interact call right or is it same delivery api call thats is done for at.js ?