SERC content package and service package

Hi,

This is regarding regulatory content provider. I came across an SAP presentation on Product Safety and Dangerous goods, which talks about twp options:

1. Going for an on-premise approach using SERC - content package

2. Going for a service approach using SERC- service package

Could you please elaborate on both the service package and content package approach? How does it work/integrate with business processes in SAP?

Thank you,

Sruthi