We recommend you check this out 鈥?it explains it clearly at a glance: http://open.taobao.com//doc/detail.htm?id=959
SPM is a solution provided by Taobao’s Community E-Commerce (xTao) to external partners (third-party sites) for tracking guided conversion performance data.
Here is an example of an SPM tracking link to a product detail page for guided conversion data:
http://detail.tmall.com/item.htm?id=3716461318&&spm=2014.123456789.1.2
Here, spm=2014.123456789.1.2 is what we refer to as the SPM code below.
SPM Code: A code used to track the position of a page module. A standard SPM code consists of 4 segments, using the format a.b.c.d (it is recommended to use only numbers), where:
- a represents the site type. For xTao partners (third-party sites), a is a fixed value, a=2014.
- b represents the external site ID (i.e., the TOP appkey used by the site). For example, if your site uses the TOP appkey=123456789, then b=123456789.
- c represents the channel ID on site b, such as a group-buy channel, a shopping channel, or a trial channel on the external site.
- d represents the page ID within channel c, such as a specific group-buy detail page, a product detail page, or a trial detail page.
A complete four-segment SPM code can identify a specific page within a specific channel on a specific website.
For example, for an xTao partner (a=2014), an external site with appkey 123456789 (b=123456789), channel ID 1 (c=1), and page ID 2 (d=2), the resulting spm=2014.123456789.1