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Technical Optimization
Search Engine Optimization is the process of optimizing web pages and their content to be easily discoverable by users searching for terms relevant to your website. The term SEO also describes the process of making web pages easier for search engine indexing software, known as "crawlers," to find, scan, and index your site.
Technical Search Engine Optimization (SEO) refers to optimizing your website’s technical elements to ensure that search engines can crawl, index, and render your webpages correctly.
Successful implementation of a technical SEO strategy optimizes your page experience for website visitors browsing your site using various connected devices. Technical search optimization improves both visibility and ranking within search engine results pages (SERPs), driving more organic traffic to your pages by elevating your position above competing search results.

Optimization in five steps :

1) Minimize site errors
2) Use redirects wisely
3) Create and submit an up-to-date XML sitemap
4) Minimize duplicate content
5) Check for indexed pages

Technical SEO ranking factors :

Technical SEO factors that actually affect your SEO performance and rankings. The first one we're going to look at is site speed, we're then going to look at mobile friendliness, and then we'll finish off with HTTPS, so that's making your web pages secure.
Site speed : You need to understand how to improve site speed. Now, when we load a web page, really what we should be aiming for is two seconds or less.
Mobile friendliness : This is about making sure that your website renders in a nice way for mobile devices. And Google actually announced back in 2015 that this was a ranking factor, will be only a slight ranking factor, but a ranking factor nevertheless.
HTTPS : So the S in HTTPS means that the page is secure, the page will have a certificate, and that's something that Google announced as a ranking factor in 2014. And before that point, we generally only used HTTPS on private pages.