The deal will combine Alterian's integrated marketing software with EMB Marketing Sciences' analytical software to build on data and plan and execute campaigns.
Ian Liddicoat, managing director of EMB Marketing Sciences, said: "Uniting our expertise means marketers will be able to analyse much faster why groups of customers respond differently and execute complex campaigns more effectively as a result.
"Alterian is an industry-recognised platform and one that will support the integration of our own class leading software tools."
David Eldridge, chief executive of Alterian, said: "Alterian is committed to delivering the very best integrated marketing platform, and this partnership with EMB Marketing Sciences adds real intelligence to our campaign management solution.
"Getting a better understanding of your customer is of paramount importance in today's business climate, and EMB Marketing Sciences is a partner we feel can help us to deliver on that for our clients."