Content marketing is a strategic marketing approach focused on creating and distributing valuable, relevant, and consistent content to attract and retain a clearly defined audience — and, ultimately, to drive profitable customer action.
Search Engine Optimization
SEO is a three letter acronym short for Search Engine Optimization. Search engine optimization about trying to rank higher in search engines. To rank higher you make changes to your website that make it easier for search engines to understand your content.
Search Engine Marketing
Search engine marketing, or SEM, is one of the most effective ways to grow your business in an increasingly competitive marketplace. With millions of businesses out there all vying for the same eyeballs, it's never been more important to advertise online, and search engine marketing is the most effective way to promote your products and grow your business.
Social Media Marketing
Most social media platforms have built-in data analytics tools, which enable companies to track the progress, success, and engagement of ad campaigns. Companies address a range of stakeholders through social media marketing, including current and potential customers, current and potential employees, journalists, bloggers, and the general public.
Email Marketing
Email marketing is the act of sending a commercial message, typically to a group of people, using email. In its broadest sense, every email sent to a potential or current customer could be considered email marketing.
It usually involves using email to send advertisements, request business, or solicit sales or donations, and is meant to build loyalty, trust, or brand awareness. Marketing emails can be sent to a purchased lead list or a current customer database.
Conclusion: Integrated digital marketing is, as it sounds, the integration of multiple marketing strategies to form a cohesive online approach for your business. Here's what it typically entails: web development and design. search engine optimization (SEO) and search engine marketing (SEM) content marketing.
source: www.quora.com