OData is a standard protocol for creating and consuming data. OData applies web technologies such as HTTP and JavaScript Object Notation (JSON) to provide access to information from various programs.
OData itself is not used for data migration purposes. Data entities are used for this.
OData is a supported protocol in Power BI. Power BI can connect to and create reports based on an OData feed from AX; it also enforces AX security.
Uniform URL conventions for filtering and sorting data within the URL itself is a key feature of the OData protocol. It always for quicker access to specific information.