1、March 2025|inform.tmforum.orgSponsored by:Authors:Mark Newman,Chief Analyst Dawn Bushaus,Contributing AnalystEditor:Ian Kemp,Managing Editor BENCHMARK REPORTComposable IT&Ecosystemstowards anOpen DigitalArchitectureassessing CSPsprogress2contents31section 5:How CSPs are using ODA in practice14sectio

2、n 2:Assessing the business case for openness and composability26section 4:The impact of ODA for vendors07section 1:ODA explained2136section 3:What does the ODA journey look like for operators?section 6:key fjndings and recommendations03the big picture40additional features&resourcesthe big pictureThe

3、n in the late 2000s and 2010s communications service providers(CSPs)undertook IT transformation projects in an efgort to modernize their support systems.These projects were either gradual brownfjeld migrations or“big bang”transformations,with systems integrators and large best-of-suite vendors often

4、 contracted by CSPs to manage large,multi-year projects.But IT transformation initiatives have had mixed success.There was a(misplaced)belief that the very act of moving applications to the cloud would reduce operating costs,increase agility and help deliver better customer experiences.Outdated proc

5、urement approaches have been a major contributor to disappointing IT transformation results.New systems and functionalities were often delivered years after there was a business need for them.And the process of selecting,shortlisting and negotiating with vendors frequently resulted in contracts that

6、 failed to meet the requirements of the business.To get the functionality they needed,operators had to make costly change requests to suppliers for their proprietary systems.Throughout this whole process levels of technical debt have been growing.Within CSPs IT functions there has been deep frustrat