“Transformation is not growing the OSS market; rather, it is a market where substitution remains the name of the game.”

This Appledore Research market share report for 2025 examines the global market for OSS products, services and platforms, and the suppliers competing across it. It covers domain management, assurance and test, fulfilment and orchestration, cloud management, inventory and planning, with regional views of North America, EMEA, APAC and the rest of the world.

We size each segment, rank the leading suppliers, and explain why we have widened our long-running Network Automation Software framework into a fuller view of OSS – one that counts incumbency, services and the platforms CSPs increasingly build on. We assess where AI and agentic AI are genuinely redirecting investment and where the talk has outrun the spending, and we offer our view on which of our new estimates remain directional rather than settled.

It is written for OSS strategy and product teams, CSP operations leaders and investors who need an objective read on who leads, where budget actually goes, and which segments are most exposed to consolidation.

Companies mentioned in this report:

Accenture, Amdocs, AT&T, AWS, Capgemini, China Mobile, China Telecom, China Unicom, Ciena, Cisco, Ericsson, Fujitsu, Google Cloud, HPE (Juniper), Huawei, IBM (Red Hat), Infosys, Keysight, Microsoft Azure, Netcracker/NEC, NETSCOUT, Nokia, Oracle, Rakuten Symphony, Samsung, ServiceNow, stc, TCS, Telstra, VMware by Broadcom, Wind River, Wipro, ZTE