Darwin Liu

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advertising services performance marketing digital marketing search engine marketing seo paid social email marketing sms marketing customer acquisition lead generation traffic growth conversion optimization roi ai-driven marketing digital marketing audit target audience customer retention growth marketing brand visibility cross-channel strategies performance analysis campaign management kpi tracking customer lifetime value content strategy copywriting ad optimization social media marketing omnichannel experience customer journey remarketing google ads bing ads demand generation influencer marketing conversion rate web analytics a/b testing landing page optimization budget management data-driven decisions high-value customers marketing strategy digital channels e-commerce strategies b2c marketing b2b lead generation audience targeting marketing transformation marketing & advertising sem information technology & services search marketing marketing sales writing & editing consumer internet consumers internet