Google AdWords Campaign Management
No other type of advertising can provide as accurate, and often times lowest, CPA (Cost Per Acquisition).
An AdWords campaign is a holistic campaign in itself; it requires just as much planning, execution and several levels of optimization as a complex, multi-channel, integrated marketing campaign would. The ad copy and target audience are crucial to its success. The advantage of an AdWords campaign is the deep nose-dive into the world of optimization.
Read the guide here: https://blog.kissmetrics.com/google-adwords-campaign-management/