
As title say our external company is trying to build interface for reading data from d365 via app that i create in Azure. Is it possible without developing from d365 site? I create app give permission to Dynamics ERP connector.full access, MS Graph user.read, user.read.all they already confirm that they are able to connect into it and read data from AD now trying to connect to our d365 live. Any suggestion?
Assuming that your question is about Dynamics 365 Finance and not some other D365 application, you don't need any development if the data you need is already exposed by an existing public data entity. If it's not the case, you must build such a data entity.
Look at Build and consume data entities, for instance.