Basically off page refers to the techniques which you use to do rank your website without any change on page website . After your website is developed and it is hosted through some web hosting services you need to start doing off page seo which will be in help for ranking in Google , Yahoo , Bing and many other search engines.
There are many techniques which are included in SEO OFF Page :-
1. Article submission :- The content you create for your web page should be jargon and should not be copied from other website or blog or through other online medium. In article submission you need to create an article related to the topic or information which your website gives. Your article should be keyword rich as in you should use keywords which you want to target and based on that you can create an article and hyperlink that keyword and submit it. Keep in note that article duplication is not allowed.
2. Blogging :- Blogging is one of the best tool to promote your website there are many things which can express in blogger but not on article or press release or forum discussion. Blogging allows you to put images or videos which may be required at times. You can have info graphics on blogging site also which allows you to know the visitors of your blog site and you can convert them into your customer or subscriber.
3. Blog Marketing :- Like blogging visitor can post comment which allow them to put link of their website or blog in that section of website and many of times crawler searches and you would get one back link .But make sure you select blog of your niche for blog commenting or blog marketing.
4. Business Reviews :- Write reviews about others businesses or ask your friends/clients to write a review of your business in major business review sites like RateitAll, Shvoong, Kaboodle, Stylefeeder, etc.
5. Questions and Answers :- There are some question and answer website which allows you to answers question what people ask might be useful for you as a company and convert them into our customer and click to our website. It helps to create good online reputation as a good marketer for your website.