The 4 key components make up the Pillars of SEO and affect the strength of a website within search engines. Of course, these 4 areas have some complexity and overlap, but understanding your strengths and weaknesses in relation to them is key to focusing your efforts.   Technical SEO: How well your content can be crawled and indexed by search engine bots. Content: Having the most relevant and best answers to a searcher’s question. Essentially, search engines want to return the most relevant and subject-knowledgeable website to a user’s query. On-site SEO: The optimization of your content and HTML. This includes metadata, schema markup, alt-image tags, etc. Off-site SEO: Building authority to ensure Google stacks the deck in your favour. Backlinks from quality websites are a great way for search engines to see your site is a trusted source of information.