Here are a few observations that we find are worth noting from the above visualization:

Blackboard has clearly lost market shares over the years

Moodle, Blackboard and D2L are now neck-to-neck in terms of market share for 2014

For 2014, Sakai and Pearson are no longer on the short list of possible LMS

Canvas has taken the market by storm and now represents around 50% of all new implementations

Another worthy observation is how the market shifted after WebCT stopped being supported. The number of migrations to other products (not Blackboard) represented about 2/3 of new implementations. Blackboard was only able to keep 30% of the newly "acquired" institutions.

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