Glossary · Ecosystem

What Is Web Traffic? Definition, Types and How It Is Measured

Web traffic is the flow of visitors to a website, measured in sessions, users and page views and classified by origin: organic search, paid advertising, referrals from other sites, social platforms, email and direct visits. In advertising, "traffic" also means the visitors an ad network delivers to an advertiser's page.

Definition

A visit begins when a browser requests a page and ends after a period of inactivity, typically 30 minutes. Analytics tools count the visits (sessions), the distinct people behind them (users) and the pages they load (page views), and attribute each visit to a source and medium read from the referrer and from tagged URLs. "Paid traffic" is the subset that arrived through advertising; "organic traffic" the subset that arrived through unpaid search results.

Types of web traffic

TypeWhere it comes fromCost
Organic searchUnpaid results on Google, Bing and othersContent and SEO effort
Paid searchSearch ads on keywordsCPC
Paid display, native, pop, pushAd networks and programmatic platformsCPM or CPC
SocialPosts and ads on social platformsFree or CPM/CPC
ReferralLinks on other websitesUsually free
EmailNewsletters and campaignsList and tool cost
DirectTyped URLs, bookmarks, untagged appsNone

How web traffic is measured

By a JavaScript tag or a server log. Tag-based tools (Google Analytics, Matomo, Plausible) record each page load with the referrer, device and UTM parameters; log analysis counts requests at the server and catches visitors who block scripts. Advertisers add a tracker between the ad and the landing page so paid visits carry a click ID and can be matched to conversions by postback. Discrepancies between an ad network's click count and the analytics session count of 10 to 20 percent are normal, caused by blocked scripts, bots filtered on one side and page abandonment before the tag fires.

Paid web traffic

Advertisers buy web traffic from search engines, social platforms and ad networks. Networks sell it by format: pop and redirect traffic as landing-page visits per thousand, push, in-page push and native as clicks, banners and video as impressions. The useful question is never the price alone but the cost per outcome after the traffic lands, which is why source-level tracking matters more than the headline CPM.

TermRelationWhere defined
Traffic sourceWhere traffic originatesTerm page
Pop trafficA paid traffic formatTerm page
Bot trafficWhat measurement filters outGlossary entry
CPMHow impressions are pricedTerm page

FAQ

What is the difference between sessions and users?

A user is a distinct visitor, identified by a cookie or device ID; a session is one visit by that user. One user can produce many sessions.

What is good web traffic?

Traffic that does what the page is for: reads, signs up, buys. Bounce rate, time on page and conversion rate tell you more than the visit count.

Why does my analytics show fewer visits than the ad network reports clicks?

Script blockers, visitors leaving before the tag loads, bot filtering applied on one side only, and different time zones. A gap of 10 to 20 percent is typical; larger gaps point to a redirect or tag problem.

Put the term to work

Nine ad formats, 195+ GEOs and source-level targeting in one self-serve account, or a managed campaign with a dedicated manager.