CatalogContext object VS CommerceContext.Current.CatalogSystem-Collection of common programming errors

If you want to go to London from Hyderabad – either you take flight to London directly (runtime API) or go to Dubai and from there take a flight to London (rest of the API models). We can access Commerce server data using five different types. 1. Runtime API  (faster) 2. Agent API 3. Local API 4. Multi channel

4. Access web services directly.

Agent mode can be used if you are developing any business tools and if you are developing a website, you should go with runtime API or Multi-channel (which got introduced in CS2009).

Hope this helps.

Regards,
-Ravi Kanth Koppala