Most important SEO activities to get traffic includes some of the On-Page and Off-page SEO activities
-Blogging
-Keyword Analysis
-Infographics Sharing
-Link Building
-Meta tags
-Internal linking
-Search Engine Submission
-Social Bookmarking

There are Various Ways to Get The Traffic. Some Of Those are:
1. Social Media Optimization.(SMO)
2. Doing Various(SEO) Off-Page Optimization Techniques like Article Submissions, Social Bookmarking, Forum Posting, Directory Submissions.
3. Social Media Marketing(SMM).
4. Running Search Engine Marketing (SEM) Campaigns like PPC, CPA.