A broad match is a mechanism run by Google adwords where in it displays the relevant ads for keywords that are not even subscribed by the advertiser. Broad match forms an integral part of seo of your website.
How the Google SEO adwords work is that you as an advertiser have to subscribe for a fixed number of keywords. You have to pay according to the number of keywords that you subscribe for. But there are many variations of the keyword for which the advertiser subscribes for. These variations may include the plural forms of the specific words or adding an article or adjective before or after the keyword and so on. The bottom line is that all these variations mean one and the same thing. Thus, even though you subscribe for a fixed number of ads for seo, your ads are also displayed for related words. Even the words that are synonyms to the actual keywords can be used in broad match.
Broad match gives an advertiser a better chance to include more number of keywords for their seo. The advertisers pay only for some of the words and they get access to more number of words. Broad match is cost effective. It helps you increase web site traffic which forms the cornerstone of the seo campaign. Since your ads are displayed for more number of keywords, it is obvious that your product gets more exposure. Broad match is also a time saving exercise when you are trying for seo campaigns. Another advantage is that it lets you make use of the global trends. One more thing is that the algorithms that execute broad match concept are self improving. They update the keyword set based on the changing popularity and changing trends of the phrases that the users enter to enter. Hence, your ads are always displayed for the best and the most popular keywords.
You can use the broad match function for your Search Engine Optimisation campaign as well in order to ensure that you can target a lot of keywords at one. With search engine marketing you'll not only be able to attract visitors from direct keywords that can be competitive but also other not so direct keywords.