Hi Praveen,
Both are used for Tag based queries.
Till 12.1, UDS connector is the only one connector which connect Tag based Data stores. After 12.2 ver. introduced Pco connector for Tag based data.
Through Pco Connector, we can browse more than 128 tags per execution.
PCo Connector - Data Services - SAP Library
For Migration:
SAP Manufacturing Integration and Intelligence 14.0 – SAP Help Portal Page
goto Upgrade Guide file.
Regards,
Praveen Reddy
