Number of active players has increased rapidly over last few years. Starting with roughly100 different options in 2011 and reaching almost 20 times more already in 2015.
As this development continues, the difficulty to choose right set of solutions becomes harder. Also you need to be careful when deciding which features are essential for your business and are they provided by your selected vendors. Continuity is also a question mark in this turbulent market as companies are acquiring smaller competitors or moving out from market after becoming obsolete.
Disruption and speed of change in this domain are amazing. It is easier to understand the speed, if we observe some of the forces behind growth: