US and European B2B agencies form global network with Marketo

Eight martech agencies in Europe and the US today announced the formation of a network of B2B agencies, calling it Martech Global, consisting of 26 agencies and 600 customers with an objective to assist global B2B enterprises with their digital marketing transformation.  
The agency network is launching today in conjunction with the Marketo Summit in San Francisco, with founding members from Europe and the Americas. 
The main challenge for B2B agencies, according to founding agency Ava