As stated on the digital literacy main page, SAMR is a model designed to help articulate the different levels of technology integration, because in the end, not all tech use is created equal.
Common Sense Media has a nice introduction video.
Examples such as this one and more can be found here to further illustrate the point.
This is easily attachable to the ideas of Bloom’s as well, as illustrated below from Common Sense Media.
There purpose of the SAMR model is quite simple, to constantly consider the elevation of technology use in instructional design. In the end, the technology may seem cool, but if it does not raise the level of thinking, then it is probably just a lot of energy for no benefit. And ain’t no teacher got time for that.
Puentedura, Ruben. (2014, September 24). Retrieved March 3, 2017, from https://www.commonsense.org/education/blog/samr-and-blooms-taxonomy-assembling-the-puzzle
Schrock, Kathy. Retrieved March 5, 2017, from http://www.schrockguide.net/samr.html