Forum posting may also included.

Off page SEO many techniques for increase backlink-

Directory submission
Social bookmarking
Blog submission
Article submission
Classified
Press release
Blog Commention etc.

Off-page optimization refers to factors that have an effect on your Web site or Web page listing in natural search results. These factors are off-site in that they are not controlled by you or the coding on your page. Examples of off-page optimization include things such as link popularity and page rank.

In SEO, there are many ways of off page technique. Here are some strategies that can help you out:

1. Bookmarking
2. Article Submission
3. Directory Submission
4. Blog Submission
6. RSS Submission
7. Classified Posting
8. Press Release
9. Forum Posting
10. Answer Site Posting
11. Social Media Marketing
12.Guest blogging
13.link diversification
14.info graphic submission

Conceptually, there are two ways of optimization:

On-Page SEO - It includes providing good content, good keywords selection, putting keywords on correct places, giving appropriate title to every page, etc.

Off-Page SEO - It includes link building, increasing link popularity by submitting open directories, search engines, link exchange, etc.

the difference M: link building and off page seo???

Off-site optimization is the process of link building for your site.
Off-page optimization includes

1. Directory
2. Forum posting
3. Content Marketing
4. Blog Commenting

Any search engine optimization work outside your website. On the other word working for gaining citation/link/ more traffic to your site.

1 Bookmarking
2 Blog
3 Directories
4 Articles
5 Forums
These are some off page seo techniques.

It includes link building, increasing link popularity by submitting open directories, search engines, link exchange, etc

Off Page Optimization is the method of earning backlinks from other websites.

I think to the content and quality backlink, share on social networks, increase traffic to website

Off page SEO play a vital role in the search engine optimization. you need to create lot of quality backlinks by doing dofollow blog commenting, Forum Posting, Social Booking Marking, High PR Directory Submission, and much more...

Off page seo Mostly contains the following things:
1.Press Releases
2.Blog Posting
3.Infographics
4.Link building
5.Forum Discussions.
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