why do we need www in domain name

www. example. com
canonical is that cookies of a main domain (i. e. example. com ) are sent to all subdomains. So if your site uses cookies, they will be sent to all its subdomains. Now, this often makes sense but itБs positively harmful if you only want to download static resources. Consider all the style sheets and images on your website: usually, thereБs no reason to send cookies to the server when requesting an image resource. A good solution is therefore to use a subdomain for static resources, such as static. example. com, to save bandwidth by not sending cookies. All images and other static downloads can be downloaded from there. If you now use www. example. com for the dynamic content, this means that cookies only have to be sent to www. example. com, not to static. example. com.

If, however, example. com is your main site, then cookies will be sent to all subdomains, including static. example. com. example. com www. *, youБre basically stuck with it. An alternative is to use a whole different URL for static resources. Stack Overflow for example uses sstatic. net, YouTube uses ytimg. com etc. Б Do you still need a w-w-w-dot before typing a web address in a browser? One answer: Sometimes yes, and sometimes no. A better answer: In general, no but it can depend on the site. If a website isPspecificallyPconfigured to require the www (or has aP very Pold setup), you may need to type the oldPdubya dubya dubya dotPfirst otherwise, the (bare) domain name alone should get you where you want to go.

Domain mapping is the process of a making a web addressP(generally the name-dot-extensionPURL) you type into your browser s address bar lead to the appropriatePIP address on aPserver, which then displays the website. Originally, the www meant that an internet destination was a website (www stands for World Wide Web, after all) as opposed to, say, a FTP site (File Transfer Protocol a way to upload/download files from a server), a mail server, etc. On the early web, www became standard by default. But along with text-only browsers and animated gif graphics like the one at right (which shows a very loose interpretation of how to send an email message), www is old news. The internet has grown up, and no longer do we need to be reminded that typing aP domain name Pinto aP browser Pwill take you to a Web site.

So do website addresses still need www or not? In most cases, the www prefix is largely outmoded and unnecessary, in the same way that we no longer have to tell people to put http:// on the front of every URL. Most sites will automatically redirect you to the Pand prefix of their choice, whether or not you type in www or not. As for company ownersPincluding the www when promoting their online presence,Pthe fact that you re referring to a website is generally implied by the. com,. edu,. org or other web suffix. When used on business cards and the like, it just adds more visual clutter. (Can you gather that we personally hate it? ) RunPa website?

Unless you want to use the www to help differentiate between subdomains (like Pis an offshoot subdomain of the domain myria. com) Pfor the purpose of managing internet traffic or balancing server loadsP Por even just to more accurately break down visitor access statisticsPacross several sites under onePTLDP Pit absolutely simplifies typing and saying your domain name to leave it out. The caveat: You need to be sure that both withPandPwithout the www will work for your site visitors. (It s a pretty easy thing to fix. P Check out some of the information atP Pfor tips and support of the concept of a shortened URL without those extra four pesky characters. Go www free! See books created by our team in the!

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