Google Analytics ChangeLog – Small but Important Change Made to How Visitors are Defined.

Currently, Google Analytics ends a session when:

• More than 30 minutes have elapsed between pageviews for a single visitor.
• At the end of a day.
• When a visitor closes their browser.

If any of these events occur, then the next pageview from the visitor will start a new session.

In the new model, Google Analytics will end a session when:

• More than 30 minutes have elapsed between pageviews for a single visitor.
• At the end of a day.
• When any traffic source value for the user changes. Traffic source information includes: utm_source, utm_medium, utm_term, utm_content, utm_id, utm_campaign, and gclid.

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