An algorithm is basically an instance of logic written in software by software developers, to be effective for the intended \"target\" computer(s) to produce output from given (perhaps null) input. An optimal algorithm, even running in old hardware, would produce faster results than a non-optimal algorithm for the same purpose, running in more efficient hardware; that is why algorithms, like computer hardware, are considered technology.

Search Engine Optimization changed with the addition of \"Hummingbird\", with web developers and writers encouraged to use natural language when writing on their websites rather than using forced keywords. They were also advised to make effective use of technical website features, such as page linking on-page elements including title tags, URL addresses and HTML tags, as well as writing high-quality, relevant content without duplication.

The alt attribute is the HTML attribute used in HTML and XHTML documents to specify alternative text (alt text) that is to be rendered when the element to which it is applied cannot be rendered.

Analytics is the scientific process of discovering and communicating the meaningful patterns which can be found in data. It is especially useful in areas which record a lot of data or information.

Usually, web search engines analyze anchor text from hyperlinks on web pages. The words contained in the anchor text can determine the ranking that the page will receive by search engines.

Artificial intelligence (AI), the ability of a digital computer or computer-controlled robot to perform tasks commonly associated with intelligent beings. The term is frequently applied to the project of developing systems endowed with the intellectual processes characteristic of humans, such as the ability to reason, discover meaning, generalize, or learn from past experience.