itrescue.jp

What It Is

IT Saver（ITセイバー） is a maintenance takeover service for Japanese companies’ websites, business systems, and infrastructure. Its core use cases are existing systems that “no one can maintain,” such as when the original developer has gone out of business, an individual developer can no longer be reached, the internal person in charge has left, documentation is missing, or server information is unclear. It is not a typical self-service SaaS product, but is closer to outsourced application maintenance or an MSP service.

Core Capabilities

The service covers Web/CMS, mobile apps, web applications, EC packages, servers, and infrastructure. Its technical scope includes PHP, Java, JavaScript, Swift, Kotlin, Objective-C, WordPress, MovableType, EC-CUBE, as well as AWS, Azure, GCP, on-premises environments, and rented servers. Its differentiator is the use of AI for source-code analysis: scanning repositories, extracting frameworks and dependencies, mapping call relationships and DB/API integrations, and reverse-engineering business logic, processing flows, impact scope, dead code, and security risks from the implementation. This ultimately helps generate architecture diagrams, specifications, and operations procedures.

Pricing

Pricing is disclosed fairly comprehensively. Before tax: Entry has an initial fee of JPY 500,000 and costs JPY 10,000/month; Light has an initial fee of JPY 1,000,000 and costs JPY 50,000/month; Standard has an initial fee of JPY 1,000,000 and costs JPY 200,000/month; Deluxe has an initial fee of JPY 2,000,000 and costs JPY 500,000/month. The minimum contract term is six months. Documentation creation, vulnerability assessments, new development, and customization are quoted separately; incidents or work hours beyond the included scope are billed at JPY 10,000/hour. The initial consultation is free. Payment is settled at the end of the month, with bank transfer due at the end of the following month.

Pros and Cons

The strengths are its clear positioning, focusing specifically on legacy systems, undocumented systems, and cases where the original vendor is no longer available; its service scope is broad, covering both applications and cloud/on-premises infrastructure; and it explains the security boundaries around AI usage, including NDAs, AI not used for training, data minimization, deletion after analysis, and encrypted processing. The drawbacks are the relatively high initial costs, standard support hours of weekdays 10:00–18:00, and the fact that 24/365 human monitoring is an optional add-on. It does not disclose SLA details, compliance certifications, a customer dashboard, or a self-service permission system. If there is no server access information at all, the takeover will also be limited.

Who It’s For and Access from China

It is suitable for small and midsize businesses operating in Japan that lack an internal IT team and have old Web, EC, or business systems they can no longer maintain. Access from China is not mentioned in the text, so it is considered unknown.