A webmaster is someone that creates and edits a website. This is also called a web architect.
webmaster
Every company with a Web site has a 'webmaster.' The webmaster can be a person or multiple people within the company who update the Web site. Or it could be a company or contracted person who is not related to the company, and who delivers Web site updates based on being a vendor.
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Because it is the base web programing language for all websites.
There are many ways one might use Google webmaster tools. One such was is to make one's web presence more reputable and accessible to visitors online.
webmaster
Submit your URL to the engines. i.e. for Google use Google webmaster tools.
The person in charge of an organization's website is typically referred to as a webmaster or web administrator. They are responsible for managing and maintaining the website, ensuring it is up-to-date, secure, and functioning properly.
Webmaster Studio and Agents of Value are two companies that provide webmaster services for small businesses. In addition, there are online sites that offer webmaster tools for a company to handle their own webmaster duties.
One can find more information about web optimisers from: Wikipedia, Web optimisers, Google Webmaster Tools, SEO Watch, Wojo Design, Webopedia, Web Presence Group, Top SEO Picks.
CIW and w3schools offer certs. w3schools is also a great site to learn the technologies for web designing for free.