What is more important on page or off page technique ?

On page and off-page SEO work together to improve your search engine rankings in complementary fashion however, SEOs generally advise getting your on-page SEO ducks in a row before focusing too much on off-page SEO. Just like building a house, you want to set the foundation first before building the rest of the house. Like a foundation, you may need to come back and do some maintenance to your on-page SEO from time to time. Balancing the two will help make your website "bilingual" so that your users can understand it as well as the search engine robots- and that s how your rankings start to improve.