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Toshiba is a Japanese group whose businesses support essential parts of society, including energy, social infrastructure, storage, and ICT. Its corporate website describes four areas—Energy Solutions, Digital Infrastructure Solutions, Devices & Technology, and Retail & Printing Solutions—and provides information about related products, services, and the group.

Hitachi is a Japanese company advancing social innovation projects that use data and technology to support a sustainable society. Its corporate website explains Lumada solutions combining IT, operational technology, and products, alongside business areas, products, news, sustainability initiatives, investor information, and careers.

NURO is a Japanese fiber-optic internet service offering plans advertised with download speeds of up to 10 Gbps and a high-speed Wi-Fi router. Its home connections are presented for activities such as video streaming, remote work, online gaming, and using multiple devices at once. The service provides plan, coverage, application, and consultation information; actual speeds and conditions vary by plan, area, and network.

So-net is a Japanese internet service provider offering connectivity through fiber-optic and high-speed mobile services. Members can review or change their contracts and consult usage guides. The service information also covers member offerings and promotions, with guidance on procedures such as transferring a connection when moving home.

CyberAgent is a Japanese internet advertising and media company that operates ABEMA, a video-streaming service. It develops new businesses as the internet industry evolves. Its corporate information covers the company’s activities, news, technology projects that connect data science with business, and career opportunities.

GMO Internet Group is a Japanese corporate group operating across internet infrastructure, security, advertising and media, internet finance, and crypto assets. Its corporate information brings together the businesses, services, news, and career information of its member companies, covering a broad range of internet-related industries.

@nifty is a Japanese internet service provider offering connection services such as fiber broadband. Its portal also presents news, service information, and member benefits related to shopping and travel. Customers can find guidance for new subscriptions, switching providers, moving a connection to a new home, and discussing contract details.

OCN is a Japanese internet service provider offering internet access and fiber-broadband provider services over NTT Docomo networks. Its services include IPoE fixed-line connections, low-cost SIM plans, email, security, and domestic and international IP calling. Customers can also find information on installation and outages, moving procedures, and support for managing their connections.

Sakura Internet is a Japanese infrastructure provider offering cloud and server services. Its products include Sakura Cloud, GPU cloud resources for AI and deep learning, rental hosting, and dedicated servers. Customers can combine cloud and physical infrastructure, access technical guidance, and inquire about deployments or partnerships for government agencies and local authorities.

Internet Initiative Japan (IIJ) is a Japanese IT company providing cloud, internet connectivity, security, outsourcing, and systems integration. It offers a broad range of solutions that support the IT environments of businesses and organizations, drawing on its network technologies and service infrastructure, from connectivity and cloud to managed services and system implementation.

BIGLOBE is a Japanese internet service provider offering communications services centered on fiber broadband, along with email and related services. Its consumer offerings include home fiber connections, 5G-compatible home routers, and mobile service. Customers can find information on applying for and setting up connections, member support, and security matters.

IDC Frontier is a SoftBank Group company providing cloud infrastructure for businesses. It operates data centers in Japan and offers sovereign cloud services designed to address data-sovereignty needs, with options spanning public and private cloud environments. Its resources also cover cloud infrastructure for the AI era, technical topics, industry events, and use cases.

GMO Pepabo is a Japanese internet-services company that helps individuals and businesses publish online and build their activities. Its offerings include Lolipop! rental hosting, Color Me Shop for creating online stores, and minne, a marketplace for handmade goods. The company is adding AI features to its services to help users focus on creative work and business.

GMO Internet Inc. is a Japanese company working in internet services, cloud, and IT solutions. Its official news covers Migraty byGMO, an AI-assisted service for modernizing core and legacy systems; an AIO tool from GMO NIKKO for generative-AI discovery; AI-related functions in ConoHa VPS; and initiatives involving data centers and business services across the group.

Rakuten Group is a Japanese business group whose stated aim is to empower people and society through innovation. Its corporate information includes company and investor resources, press releases, sustainability activities, and careers. It also reports on businesses across the group, with examples involving Rakuten Ichiba merchants, AI, Rakuten Symphony, and gaming, giving readers an overview of its initiatives and services.

LINE Yahoo is a Japanese internet company that operates services under the LINE and Yahoo brands. Its businesses span search and portals, e-commerce, messaging, and advertising. Corporate information also explains its mission, data-use initiatives, efforts to support a healthy online information environment, and careers. The company was formed in 2023 through the reorganization of Yahoo Japan, LINE, and related businesses.

Rakuten Mobile is a Japanese mobile carrier offering smartphone and phone plans, devices, promotions, coverage information, and customer support. Its plans include Rakuten Saikyo, whose price varies with data use, and Rakuten Saikyo U-NEXT, which bundles U-NEXT entertainment. The company also provides home and fixed internet options such as Rakuten Hikari and Rakuten Turbo; unlimited data use may be subject to speed controls during congestion.

SoftBank provides consumer communications such as smartphone and internet services, as well as business solutions that include AI and cloud offerings. Its official information covers products and services, initiatives applying AI to social challenges, and examples of improvements made in response to customer feedback. It also reports device launches and news about communications services.

au is a Japanese telecommunications brand offering smartphones, mobile phone service, and internet connections to individual customers. It provides information on plans, promotions, 5G services and devices, fixed-line options such as au Hikari, and products sold through its online shop. Customers can also find a disaster message board and account support for choosing and managing communications services.