WSI is a global digital marketing agency with over 20 years of experience. The presentation discusses WSI's services, methodology, clients, and case studies. Key services include search engine optimization, social media marketing, web design, content marketing, and paid advertising. WSI follows a results-oriented methodology called the Digital Marketing Lifecycle to understand clients' businesses and deliver customized strategies. Their clients represent various industries and have experienced increased traffic, leads, and sales from partnering with WSI.