[bikamonki]

Simple: existing infrastructure. Just as phasing out petrol-powered vehicles will take decades, so it takes years to move IT infra to the new standards. Add to it this complexity: new ways to solve IT problems arise all the time. Just as now it seems that REST + JSON are the best possible solution, SOAP + XML had the same status a few years back. What will happen when browsers run byte code? Or when we descentralize internet services?

[VertexRed]

But RESTful APIs have been around for so long though, does this the existing infrastructure situation really apply to this?

[mattkrea]

Of course it does. Every day I still deal with services that speak on a schedule with SFTP and flat files.. existing infrastructure is hard to eradicate.