Search Engine Optimization Fundamentals

Search engine optimization (SEO) is the ongoing practice of making content more pertinent to Google’s search algorithms. SEO rests on four core stages: crawling, indexing, ranking, and the traffic those rankings send to your site.

How does crawling work in SEO?

Crawling is the first stage in how search engines discover and understand web pages. Crawlers locate pages connected by links, and the more easily your site can be crawled, the higher it is likely to rank.

Google must decide which pages to download and index first, because the Web is so large that even the biggest search engines only cover a fraction of publicly available content. Its algorithms prioritize what gets indexed.

Crawlability, a search engine robot’s ability to explore your site and read its content, is one of the cornerstones of SEO. Without crawlability, your pages would never be discovered by searchers and would not appear in their results. One way to improve crawlability is implementing a sitemap.

What is indexing in search engines?

Indexing helps search engines discover, crawl, index, and understand your content so it can match a searcher’s intent. It is an essential step toward high search engine rankings.

Google analyzes user queries and pulls from its database of indexed pages to return results that best match them. Keywords are used to index pages and locate relevant information.

In a relational database, an index is an organized copy of data from a table built for quick searches. It reduces the rows a query must traverse, typically holding keys that map search terms to data on disk. Using an index can cut query response times by up to 90%.

How does ranking determine SERP visibility?

SEO is a set of techniques used to increase a website or page’s visibility on a search engine results page (SERP). It includes both technical SEO (changes to back-end site files) and content-based SEO (changes to content and structure).

A core part of SEO is making sure your content is relevant to what users actually search for, which means reviewing keywords along with quality, authority, and whether the page addresses users’ queries effectively.

Search engines constantly revise their algorithms to weed out dubious content and give users an optimal search experience. Understanding how rankings are decided helps you write more useful content and rank higher.

How does SEO traffic convert into business results?

SEO techniques are designed to drive visitors to websites or pages through organic search results pages (SERPs). SEO services typically include comprehensive page edits, keyword research, and sitemap validation. Depending on the site, SEO may also include setting up and integrating Google Search Console, monthly status teleconferences with clients, and analytics reporting.

Search engines aim to surface the most pertinent, expert, and high-quality content for a query. Their algorithm weighs on-page content, off-page content, reputation, server configuration, and similar factors when picking which pages to display.

Traffic from SERPs only helps a business once that traffic converts into sales or other key actions like form submissions and phone calls, so an effective SEO approach focuses on optimizing for conversions, not just rankings.

FAQ

What are the four fundamentals of SEO?

The four fundamentals covered are crawling (search engines discovering pages via links), indexing (storing pages in a database for fast retrieval), ranking (algorithms ordering pages by relevance and quality), and traffic (the visitors a site receives from organic search).

Why is crawlability important for SEO?

Crawlability is one of the cornerstones of SEO because it is how a search engine robot explores a site and reads its content. Without crawlability, pages are never discovered and cannot appear in search results, and implementing a sitemap is one way to improve it.

How much can indexing speed up a database query?

An index in a relational database is an organized copy of table data built for quick searches, mapping search terms to data on disk. Using an index can reduce query response times by up to 90%.