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ConoHa is a Japanese hosting and cloud-services brand from GMO Internet. Its official homepage focuses on ConoHa WING, shared rental hosting for websites and WordPress, and describes a guided setup that can prepare a server, custom domain, WordPress, and SSL together. The service also lists automated backups, email, security functions, and a control panel. Navigation connects visitors to ConoHa VPS, game servers, browser-based AI Canvas, and ConoHa Pencil, an AI writing-support tool.

Zenn is an online community where engineers share technical knowledge and experience. Members can read and publish articles about programming and other technology topics, as well as Ideas on careers, teams, and work. The site surfaces trending and new posts, topic pages, and books, and includes Scrap discussion threads and author-following features. It also introduces Publication and corporate offerings, helping developers discover practical learning material and exchange ideas with peers.

Yahoo! JAPAN is a Japan-focused portal operated by LY Corporation. Its homepage brings together web, image, video, and AI-mode search, along with news, weather and disaster information, sports, maps, and transit guidance. It also links to shopping, auctions, email, travel, finance, and community Q&A services. The front page collects major news topics, local weather and transit updates, sports results, and real-time search trends, making it a broad starting point for everyday information and services in Japan.

shoeisha.jp is the SHOEISHA iD member portal operated by Japanese publisher Shoeisha. After signing in, users can manage their profile and account settings, review linked media services, adjust newsletter subscriptions, and check event registrations. The portal also lists SEshop order, delivery-address, purchase-history, and ebook-download sections, and provides links to Shoeisha web publications covering software development, enterprise IT, marketing, HR, AI, and product work, as well as its bookshop and seminars.

JUAS is a neutral Japanese association that promotes effective use of information technology from the perspective of organizations that use IT. It runs research groups and committees on management and information, along with member seminars and events, and publishes findings from studies such as corporate IT trends and software metrics. The site brings together association activities, member information, books and research reports, training programs, and guidance on PrivacyMark review services.

JISA is a Japanese industry association whose members include major information-services companies. It supports the development of the IT services sector and provides practical resources for member businesses, including industry statistics and information on IT policy, legal and financial topics, software engineering, and standards. Its site lists seminars and events, publications and reports, policy proposals, committee activities, ICT College programs, workforce development, and member services.

JPNIC is an organization that supports the operation of Internet infrastructure in Japan and provides registration and management services for IP addresses and AS numbers. Its official site offers WHOIS search, information about IP addresses and domain names, and technical resources on DNS and routing. It also covers Internet governance and policy, statistics, Internet history, events, presentations, research publications, and newsletters for network operators and other interested readers.

Japan Registry Services (JPRS) is a Japanese company that supports Internet infrastructure through domain-name registration management and operation of the Domain Name System. Its official site describes services for JP domain names, gTLD registration through its registrar services, broader TLD support, server-certificate issuance, and brand TLDs. It also provides corporate and international-cooperation information, news releases, published articles, publications, and technical resources about DNS and DNSSEC.

JPCERT/CC is a Japanese coordination organization for cybersecurity incident response and related information. Its official site publishes security advisories, vulnerability-related guidance, procedures for requesting incident-response support, and a recurring weekly security report. It also provides CSIRT reference materials, secure-coding guidance, research publications, and incident-handling resources to help organizations and security practitioners understand threats and plan a response.

The Information Processing Society of Japan (IPSJ) is a Japanese scholarly organization for people working in information processing and computing. Its official site provides information about society journals and research publications, technical study groups, conferences and forums, and a digital library. It also presents education and talent-development programs, professional qualification initiatives, standardization work, member services, and guidance for submitting or presenting research.

Japan's Information-technology Promotion Agency (IPA) provides public information and programs intended to support a better society through data and digital technology. Its main areas are information security, IT examinations, digital-skills development, and digital transformation across society and industry. The official site offers security alerts and guidance, exam details and past questions, learning programs, DX case studies and guidelines, research reports, events, and agency announcements.

gihyo.jp is an IT content site operated by Japanese publisher Gijutsu-Hyoronsha. It publishes articles and news across operating systems, frontend and backend development, programming, machine learning and AI, devices and IoT, science, design, and business skills. Readers can explore featured stories, rankings, and serialized material, follow updates through email newsletters or RSS, and find links to the publisher’s books, magazines, and ebook store.

DevelopersIO is a hands-on technology publication produced by Japanese company Classmethod. Engineers share practical experiments and implementation notes about services and tools, with coverage spanning AWS, cloud platforms, generative AI, data analysis, application development, security, and software tooling. Articles can be explored by topic, product, or technology, and the site also links to seminars, study groups, customer cases, and Classmethod company information for practitioners seeking applied guidance.

Impress Watch is a Japanese news service covering technology and services that influence everyday life and business. Its sections include technology, business, lifestyle, entertainment, money, and society, with current news, product coverage, reviews, special features, and serialized columns. Readers can browse popular-article rankings and themed pages, and follow links to other Impress Watch publications, a newsletter, RSS feeds, social channels, and the Watch+ member service.

ITmedia is a Japanese information portal for IT and digital industries, operated by ITmedia Inc. Its network covers AI, enterprise technology, smartphones and communications, PCs, business, and developer and engineering topics through news, explainers, product coverage, and professional publications. The homepage features updated top stories, section-specific recent articles, and rankings, while linking to specialist media, blogs, RSS, and company announcements. It offers a broad view of technology and digital products for readers in Japan.

Qiita is a Japanese knowledge-sharing community where engineers record and publish programming knowledge and development experience as articles. Readers can search posts, explore topic tags and rankings, browse questions, official columns, and event listings, and discover work by individual contributors and organizations. After signing in, users can follow people and tags, save useful posts to their stock list, and suggest edits. The site also links to related team, business, and engineering-career services.

Publickey is a Japanese technology blog focused on enterprise IT, cloud computing, web technology, software development, and wider industry developments. Its editor, Junichi Niino, publishes news and commentary with analysis, covering topics such as cloud platforms, databases, programming languages, operating systems, networks, and security. Readers can browse posts through topic tags and monthly archives or follow updates through RSS and the site's social channels.

Think IT is a Japanese technology media site for engineers, operated by Impress and focused on practical use of open-source and other technologies. Readers can find explainers and news on cloud, infrastructure, servers, databases, programming languages and tools, AI, security, and system operations. The site also publishes series, interviews, event reports, sponsored articles, and popular stories, with newsletter and RSS options for following technical knowledge and industry developments.

RAKUS is a Japanese business IT company offering cloud software and IT staffing services to help organizations improve operations and support growth. Its corporate site presents the Rakuraku Cloud family, including tools for expense reimbursement, invoice issuing and receipt, sales administration, attendance, HR and labor, electronic-record storage, and receivables management. It also covers simpler email services, company news, investor information, and careers.