Researchyour market and find the right keywords and key-phrases
Writeinnovative and targeted adverts to ensure maximum click through ratios
Createtargeted, compelling landing pages for each campaign (if necessary)
Analyzehow each change affects your campaign performance & make necessary modifications eliminate & add keywords according to how they perform
Increaseor decrease cost per clicks as needed to maximize your ROI
Focuson the ads/terms that convert the most and cost the least