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No matter how much optimization you do, if you don't know the results, it's all just the blind men and the elephant. SEO measurement and iteration are no longer about "just looking at rankings." The core logic in 2025 is: let real business data speak for itself, and continuously evolve with a closed-loop mindset.

When most people talk about SEO, they immediately think of on-page tweaks — title tags, meta descriptions, heading structure, and speed optimizations. Those things matter (a lot), but they’re only half the story. The other half happens completely outside your website. It’s called Off-Page SEO, and at its core it’s very simple: it’s about convincing Google (and your audience) that your site is genuinely important, trusted, and worth ranking above the competition. In other words, Off-Page SEO is the art and science of building authority.

Technical SEO is the cornerstone of a website. It doesn't directly create content, but rather builds a robust technical framework to ensure that content can be discovered, crawled, understood, and efficiently indexed by search engines. Like the steel reinforcement of a building, it is invisible yet determines the stability and overall quality of the website.

On-page SEO has completely evolved from "keyword stuffing" to a systematic project aimed at "making this page the best answer to similar questions across the entire internet." The core message can be summed up in one sentence: You're not optimizing the page; you're optimizing the "answer."

The foundation of SEO can be summarized in one sentence: it all starts with understanding the user, and the only tool that truly puts "understanding the user" into practice is keyword research. It's not just "a part of the foundation," it's the very foundation of SEO. Technical optimization, the best internal link structure, and the most expensive external links are all useless if built on a flawed keyword system. Conversely, if keyword research is done correctly, 70-80% of the subsequent work will fall into place naturally.

On-page SEO refers to the titles and links that make up the overall structure of a page. Titles indicate the importance of the document, while links connect the content of the webpage.

Metadata is a piece of "data about data" that describes the content, structure, or attributes of a webpage. It's a summary of a website's content, used to add titles, descriptions, and images to the website. It's not directly displayed in the visible area of ​​the page, but is used by browsers, search engines, social media platforms, and web crawlers to understand, index, display, or share the page.

URL structure is a crucial component of SEO strategy. While Google doesn't publicly disclose the specific weights of each SEO element, a good URL is generally considered best practice, regardless of the relative importance of the final ranking factors.

AMP is an open-source framework led by Google, designed to enable near-instantaneous loading speeds for web pages on mobile devices. By simplifying HTML, limiting JavaScript, and utilizing caching mechanisms, AMP pages can typically render within one second, improving user experience, reducing bounce rate, and benefiting SEO ranking.

Rendering is the process by which browsers or search engines (such as Google) parse and execute the HTML, CSS, and JavaScript code of a webpage to generate the visual content that the user ultimately sees. Ranking, on the other hand, is the process by which search engines rank all relevant webpages based on hundreds of signals, including content quality, page experience, relevance, and authority, determining their position in search results.