Onpage optimization refers to all measures that can be taken directly within the website in order to improve its position in the search rankings. Examples of this include measures to optimize the content or improve the meta tags.

Offpage optimization refers to all the measures that can be taken outside of the actual website in order to improve its position in search rankings. These are measures that help create as many high-quality backlinks (incoming links) as possible.

On-Page means- writing interactive content with good keywords, mega tags etc
These factors controlled by us.
Off page seo is link building , social media bookmarking

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