Search Engines

Understanding how search engines work, Google in particular, is important when working in SEO. The basics of crawling and indexing are amazingly useful to understand if you want to rank your own content.

Additionally, Google updates its algorithm several times a year. Understanding the more significant updates, and how they work, can help you to craft content and SEO strategies that are up-to-date.

We've written extensively about how search engines work, and included some of the top resources here. You can also browse the latest posts on search engines from the Moz blog below.

How Search Engines Work : New to SEO? Start with the basics of how search engines operate with our free beginner's guide.

Search Engine Ranking and Visibility : Learn the fundamentals of how search engines rank content on search engine result pages.

Google Algorithm Update History : A complete history of Google algorithm updates since 2000. This includes important links and references for understanding how Google works.

How Search Engines Value Links : Search engines work off a number of signals, but two of the most important are content and links. In this video, Rand Fishkin explains the basics of link evaluation.

MozCast : Is Google updating it's algorithm as we speak? MozCast is the Google algorithm weather report, so you can see how much Google results are changing each day.

Most Recent Articles on Search Engines

Open call for French SERPs that need explaining
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Open call for French SERPs that need explaining

Rand got me all excited with his post. I've been tracking down the French vertical of "web design / website design" theme of keywords for the last 12 months. This vertical is very similar to the English one. As an example, if you wanted to score well for Web Design in English on Google.com, you would try to hit, in the long term, the best keywords, like:...

AOL Search Data
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AOL Search Data

AOL search data - why am I posting this under Google? Because AOL uses Google for their search.I recently grabbed a copy of the AOL search data that was released earlier this month. The dataset is rather large - 450MB compressed - over 1.4GB uncompressed in MySQL.This...

Matt Cutts and I are BFF
Rebecca Kelley

Matt Cutts and I are BFF

Hey everyone, Rebecca here. I'm back from San Jose (and San Diego for a brief R&R), and I have GREAT news. Apparently my toiling over transcribing Matt Cutts' videos has paid off big time, because he and I are totally BFF (best friends forever). Seriously, check this out: ...

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New Real Estate SERPs Refinement and a Disturbing Rumor about Google
Rand Fishkin

New Real Estate SERPs Refinement and a Disturbing Rumor about Google

A little bird passed me a rumor today that I can neither confirm or deny, but it's certainly worthy of discussion. The theory goes - when launching a new site, buying a significant quantity of AdWords/AdSense for the site is a good way to tell Google the site isn't spam and avoid long waits in the sandbox. Here's my take on this: There is some logic in the idea that a...

Intruder Infiltrates YaHOO! Japan
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Intruder Infiltrates YaHOO! Japan

If this were America, surely security would haul off this man in a heartbeat. But it's not. This is Japan, land of the weird and wacky (I know, did I mention I lived there for 10 months?) and Japanese comedian Razor Ramon merely brushes them aside with a... thru...

Matt Cutts' Videos: Part 3
Rebecca Kelley

Matt Cutts' Videos: Part 3

Dear Mr. Cutts,I want to start off by saying thank you for taking time out of your undoubtedly busy life fielding SEO's most burning questions. That being said, I beg you to please stop answering questions via video. I've been chained to my desk for over a day now, and my skin has been rubbed raw from the cuff around my ankle (and from my unsuccessful attempts to gnaw off my own foot)....

Matt Cutts' Videos -- Take 2!
Rebecca Kelley

Matt Cutts' Videos -- Take 2!

Boy, what did I get myself into? Rand has chained me to my desk and ordered me to summarize the next set of videos released by Matt Cutts. This new batch of summaries is more verbatim than the last one, so enjoy.1. Does Google treat dynamic pages differently than static pages?...