I'm not sure I understand your scope fully, specifically what is "1 lac key-phrases"?
Also, what is the difference between a "search term" and a "keyword idea", by "search term" do you mean a term that you would enter into your code and by "keyword idea" do you mean a term that is generated for you by the API that is related to the "search term"? Answers as I understand your statement of scope: 1) It sounds like you would want to use the TargetingIdeaService to get keyword ideas and TrafficEstimatorService to get competition, monthly search volume, approximate CPC to target. 2) Both of these services are currently available in the v201101 API so to avoid rebuilding your application when the older services sunset, you should probably use v201101. 3) The sandbox is to be used only to verify that your application is making structurally valid requests to the API services. The responses it gives back are not based on any real data and tend to be pretty random. Only the production AdWords API services will return real values. -- =~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~ Also find us on our blog and discussion group: http://adwordsapi.blogspot.com http://groups.google.com/group/adwords-api =~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~ You received this message because you are subscribed to the Google Groups "AdWords API Forum" group. To post to this group, send email to adwords-api@googlegroups.com To unsubscribe from this group, send email to adwords-api+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/adwords-api?hl=en