1. Search Engine Optimization (SEO)

Search engine optimization (SEO) is the practice of increasing the visibility of a website in search engines via search results. SEO encompasses both tactics and strategies that help ensure web pages would appear at the top of a user's search results page.

2. Social Media Marketing

Social media marketing uses social networks, blogs, wikis, forums, etc. to spread brand messages and drive traffic to websites.

3. Content Marketing

Content marketing is a type of digital marketing where companies create and distribute content to attract customers and prospects online.

4. Email Marketing

Email marketing is the method of promoting products or services to individuals via email. Most email marketing software automatically sends a confirmation email after a customer receives an email.

5. Pay Per Click Advertising

PPC advertising, commonly abbreviated PPC, refers to paying a publisher or third party to display ads on their website. A pay-per-click campaign may involve setting a daily budget, selecting keywords relevant to your business, and then using those keywords to bid on ad space. When someone clicks on your ad, you pay the advertiser based on how much you spent to place the ad.

6. Mobile Marketing

Mobile marketing is marketing done via mobile phones. Major players in this industry include Apple Inc., Google Inc., Samsung Electronics Co Ltd., Research In Motion Limited, Microsoft Corporation, Sony Ericsson, LG Electronics Inc., Motorola Mobility LLC, HTC Corp., Palm Inc., and Nokia Corporation.

7. Display Advertising

Display advertising is a type of online advertising that involves the placement of promotional advertisements on a webpage. Unlike paid search ads, which are the result of a consumer searching for particular information display ads are displayed directly below search results or on a separate screen while consumers are checking out product details.