SEO is built on three pillars: Technical SEO handles the backend so Google can access your site, On-page SEO covers the content and structure inside your site, and Off-page SEO builds trust from outside through things like backlinks. This article explains what each one is, how they differ, and what to do first so your site ranks in a structured, systematic way.
You have been doing SEO for a while, but still unsure what SEO actually includes?
Many people hear the terms On-page, Off-page, and Technical SEO but are not sure how they differ or where to start. This confusion leads many sites to work in the wrong order, like rushing to build backlinks when Google cannot even access their pages yet.
At Yangdee Group, we see SEO as three pillars that work together. This article explains each pillar clearly and tells you the right order to act, so you can plan your SEO systematically and avoid wasting time on what is not its turn yet.
How Many Types of SEO Are There?
SEO is divided into three main types: Technical SEO, On-page SEO, and Off-page SEO. Each plays a different role in helping search engines access your site, understand your content, and trust that your business is credible enough to rank.
Put simply, all three do different jobs but support each other. Technical makes sure Google can come in and read your site. On-page makes Google understand what your site is about. And Off-page confirms your site is trustworthy in the eyes of others.
If any one pillar is missing, the overall result weakens. Understanding all three is therefore an essential foundation before doing SEO seriously.
What Is On-page SEO?
On-page SEO is everything you do within your own website to help it rank better. It covers keyword use, content, page structure, meta descriptions, and internal links, all the things you control yourself.
The heart of on-page is making your content match what searchers want, and helping Google understand what each page is about.
The most important starting point of on-page is choosing the right keywords. If you choose wrong, even great writing will not match what people search. That is why we always suggest starting with the keyword research process first, then placing keywords into your headings, content, and page structure.
What Is Off-page SEO?
Off-page SEO is what you do outside your website to influence rankings. It mainly includes building quality backlinks from reputable sites and managing your brand’s reputation online.
The goal of off-page is to build credibility and recognition from outside, like getting endorsements from others that your site has value.
The most important off-page tool is the backlink, but it must focus on quality and be done safely. We explain this in detail in our article on what a backlink is and how to build white-hat links, which helps you build credibility without risking a Google penalty.
What Is Technical SEO?
Technical SEO is the care of your site’s backend elements, such as speed, mobile-friendliness, and helping Google crawl and store your pages. These elements help search engines crawl and understand your site effectively, which is crucial for ranking.
Here are the four main areas of technical SEO to know.
Crawl and Index
Make sure Google can read your pages and store them in its system. Set up robots.txt, canonicals, and sitemaps correctly, because if important pages are blocked or not indexed, they have no chance to rank.
Core Web Vitals
The three main user experience metrics are LCP, which measures how fast the main content loads and should be under 2.5 seconds, CLS, which measures how stable the page is without jumping around, and INP, which measures responsiveness when users click.
Mobile and HTTPS
Your site must display well on mobile and use a secure HTTPS connection, because these are basics Google expects from every site.
Structured Data and Site Structure
Add schema to help Google understand your content, and organize your site structure systematically. One more thing to watch: Google’s December 2025 rendering shift means pages returning 4xx or 5xx error codes may be excluded from the rendering queue entirely, so fixing broken links matters more than ever.
A Clear Comparison
To make it clearer, here is a table comparing the three pillars of SEO.
| Pillar | Where | What it solves | Example work |
|---|---|---|---|
| Technical SEO | Site backend | Lets Google access and read your site | Speed, crawl, index, Core Web Vitals |
| On-page SEO | Within the page | Helps Google understand what your site is about | Keywords, content, title, internal links |
| Off-page SEO | Outside the site | Makes Google trust your site is credible | Backlinks, brand reputation |
As you can see, the three do not compete. They work on different layers toward the same goal: getting your site to rank and driving results for your business.
What Should You Do First? The Right Order
The order you act in greatly affects success. Start with Technical SEO to create a stable foundation, then do On-page SEO so Google understands your site’s topics, and after that do Off-page SEO such as building backlinks and brand to strengthen authority.
The simple reason is that if Google cannot access your site, great content or many backlinks mean nothing, because the pages are not stored in the first place.
A trap we see often is businesses jumping to backlinks first, while their site is still slow and full of broken pages. The result is wasted budget and time with no return. Following the right order is always more worthwhile, to help your business grow with measurable results.
Conclusion
Good SEO needs all three pillars. Remember that Technical SEO is the foundation to do first, On-page SEO makes Google understand your content, and Off-page SEO builds credibility from outside. When all three are done in the right order, your site becomes strong and ranks sustainably.
If you want an SEO strategy that covers all three pillars and is measurable, our team is ready to help you plan it the data-driven way. Explore Yangdee’s full SEO services and start planning your business growth with us.
Frequently Asked Questions
Do I need to do all three types?
Yes, you should do all three, because each pillar has a different job and supports the others. If you do only one, like having great content but a slow site, or many backlinks but Google cannot access your pages, the overall result weakens. Doing all three in balance is the most sustainable path.
Where should beginners start?
Start with Technical SEO so Google can access and read your site, then do On-page so your content matches keywords, and after that do Off-page to build credibility. Following this order helps you avoid wasting time on what is not its turn yet.
Does Technical SEO require coding?
You do not need to be a strong coder, but you should understand the basics, such as site speed, mobile-friendliness, and indexing settings. Some work can be done with ready-made tools, while more complex tasks are best handled by a developer or expert team.
What is the difference between On-page and Technical SEO?
On-page focuses on content and communicating with readers, such as keywords and article structure. Technical focuses on the backend that readers do not see, such as speed and crawling. Both work within the page, but on different layers.
How do you measure Technical SEO?
Use tools like Google Search Console to spot indexing and crawl issues, and PageSpeed Insights to check Core Web Vitals. Most SEO teams run deep audits quarterly and check speed and coverage monthly, to keep the site in good shape at all times.