Who is NTT?
Nippon Telegraph and Telephone Corporation (NTT) is a Japan-based information and communications technology (ICT) group that provides global telecommunications, network, cloud, data center, managed services, and related digital solutions for enterprises and public-sector organizations.
- Global network and connectivity services for enterprises and carriers (network services)
- Colocation, hosting, and interconnection across a distributed data center footprint (data center infrastructure)
- Managed cloud, hybrid IT, and infrastructure outsourcing offerings (cloud and managed services)
- Security consulting, managed Security Operations (SecOps), and compliance-focused services (cybersecurity services)
- Consulting, systems integration, and managed services for Information and Communication Technology (ICT) modernization and digital initiatives (IT services and integration)
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More About NTT
NTT is an ICT services and telecommunications group headquartered in Japan that operates through multiple business units to provide network, cloud, data center, and managed services for enterprise, carrier, and public-sector customers worldwide. Its portfolio is structured to support global Wide Area Network (WAN) connectivity, hybrid IT architectures, and outsourced operations, giving technical stakeholders options to design and run distributed application platforms and critical workloads. NTT is also the incumbent telecom operator in Japan, providing domestic fixed and mobile communications services, and it extends this network expertise into global connectivity offerings for multinational clients.
In enterprise environments, NTT’s network and connectivity services (network services) cover Multiprotocol Label Switching (MPLS), internet access, Software-Defined Wide Area Network (SD-WAN) architectures, and other IP-based services designed to link branch locations, data centers, and public cloud regions. These services integrate with standard routing and switching protocols such as Border Gateway Protocol (BGP), Open Shortest Path First (OSPF), and MPLS Virtual Private Network (VPN) constructs, and can be combined with cloud connectivity options to major hyperscale cloud platforms. For organizations with distributed users and applications, NTT positions these network services as a backbone for secure connectivity, latency management, and Traffic Engineering (TE) across regions.
NTT’s data center offerings (data center infrastructure) provide colocation, power, cooling, physical security, and interconnection options in facilities located in multiple geographies. These data centers are typically built to recognized availability and compliance standards and are used by enterprises, cloud providers, and content platforms as hubs for application hosting, storage, and network peering. For technical teams, NTT data centers can function as neutral sites to deploy private infrastructure, connect to multiple carriers, and establish low-latency links to public cloud platforms and internet exchanges.
On top of these facilities and networks, NTT offers cloud and managed services (cloud and managed services) that support hybrid IT architectures, including managed private cloud, support for major public clouds, and infrastructure outsourcing. These services commonly include monitoring, incident response, capacity management, backup, and lifecycle management for operating systems, middleware, and application platforms. They are structured so that enterprises can offload day-to-day operations while retaining architectural control over workload placement and integration patterns.
NTT’s security services (cybersecurity services) include advisory, implementation, and managed SecOps such as Managed Detection and Response (MDR), vulnerability management, and security device management. These offerings are aligned with common security frameworks and are designed to work with standard security technologies like firewalls, IDS/IPS, Security Information and Event Management (SIEM) platforms, endpoint protection, and identity and access control systems. For regulated industries and public-sector entities, this portfolio can be used to support policy enforcement, incident monitoring, and compliance reporting across complex IT estates.
Alongside infrastructure and security, NTT provides consulting, systems integration, and ongoing managed services (IT services and integration) that support network modernization, data center migration, workplace collaboration deployments, and industry-specific digital use cases. These services span assessment, solution design, implementation, and run phases. In directory and marketplace taxonomies, NTT is typically categorized under global telecommunications carriers, enterprise network services, data center and colocation providers, cloud and managed service providers, and cybersecurity service providers, reflecting its coverage across connectivity, infrastructure, and managed operations.
Our description of NTT. Updated December 2025.
