SAP integration (inbound or outbound) via web-services or via SFTP, its Pro's & cons.
Third Party NoN-SAP eHRIS Software integration with SAP-HR,Security threats to existing SAP landscape system.
XML/Web based services security issues, please elaborate.
SaaS system, its recurring cost & other reasoning.
Software/Hardware used: SAP ECC 6.0- Oracle Database- Sun Solaris Hardware