Why IT Systems at Overseas Subsidiaries Often Become Black Boxes|Insights from My Year in Vietnam as an IIJ Sales Representative

IT Priorities Often Differ Between Headquarters and Overseas Subsidiaries

When working with companies that operate overseas subsidiaries, I often see a clear gap between how Japanese headquarters and local subsidiaries view IT.

Headquarters may want to maintain a certain level of security or, ideally, implement a more robust IT configuration. However, in many cases, the local subsidiary is responsible for the actual budget.

This structure can make IT operations at overseas subsidiaries more complicated.

In countries such as Thailand and Vietnam, many local subsidiaries simply do not have enough budget to invest sufficiently in IT.

Factory investments and labor costs tend to take priority, while IT is often pushed down the list.

As a result, companies often purchase on-premises equipment based mainly on price and outsource the setup to local vendors, with the mindset that “it should be as cheap as possible” and “it just needs to work for now.”

Low-Cost IT Decisions Can Make the Overall Picture Harder to See Later

The real problem often appears later.

Headquarters may assume that a certain level of security is already in place. Meanwhile, the local subsidiary leaves configuration details to the vendor, and sufficient documentation is not kept.

As a result, the company ends up with an IT environment where no one has a clear overall picture. By the time the issue becomes visible, the system has already become a black box.

Configuration Details Are Not Properly Documented

Even when system setup is outsourced to a local vendor, the design documents and configuration details can still be reviewed later if they are properly organized.

In reality, however, this is often not the case. Only the person who was responsible for the original setup may know the details. Configuration information may not be stored in any document or file. Admin login credentials may be unclear or unavailable.

As a result, when a system failure occurs or a security check is required, the first step is often to investigate the basic question: “What is the current system configuration?”

Handover Processes Are Often Incomplete

Organizational challenges can make the situation even more difficult.

In many overseas offices, there may be only one Japanese manager or branch head, while the rest of the team consists of local staff.

Employee turnover also tends to be higher at overseas locations, and IT responsibilities are not always assigned to a dedicated person. It is not uncommon to hear comments such as: “We don’t know what the previous person configured.” “Admin credentials were never handed over.”

When this happens, IT knowledge does not stay within the organization. It remains tied to individuals, vendors, or past decisions that no one can fully trace.

On-Premises Environments Continue to Carry Hidden Operational Costs

Another common pattern is to keep buying inexpensive IT equipment and replacing it only when it fails.

Each purchase may seem small on its own. However, every replacement creates new upfront costs. And if no one understands the existing configuration, similar problems are likely to occur again.

This is where it becomes necessary to look at the issue from a different angle.

Maintaining on-premises equipment involves costs such as:

• the cost of purchasing the equipment itself
• upfront costs each time equipment is replaced
• labor costs for internal staff or external vendors who maintain the equipment
• troubleshooting burdens caused by poor handover and dependence on specific individuals

In other words, the company continues to carry these costs and operational burdens over time.

Cloud services, on the other hand, make ongoing costs more visible. This often leads people to feel that monthly fees are expensive.

However, when the cost of maintaining an on-premises environment is viewed together with the people, time, replacement work, and operational burden involved, the comparison may look different depending on the size and structure of the subsidiary.

Ease of Management Should Also Be a Key Decision Factor for Overseas Subsidiaries

This is not simply a matter of saying that cloud is good and on-premises is bad.

For overseas subsidiaries with limited staff and frequent changes in personnel, ease of management and ease of handover should also be important factors in IT decision-making.

One practical extension of this idea is to reduce reliance on on-premises equipment and use cloud services such as AWS where appropriate.

By reducing the need to manage physical equipment and making configurations easier to track and manage, companies can avoid situations where no one understands the current system configuration after personnel changes.

Do Not Leave Everything to the Local Team: Build a Structure That Connects Headquarters and Local Operations

It is also realistic not to handle everything in-house. For many companies, a more practical approach is to outsource part of the work to a reliable IT vendor that can communicate with both headquarters and the local subsidiary.

The goal is to maintain a baseline level of security and operations in a way that remains manageable.

For companies operating overseas subsidiaries, having the right IT partner can be critical. A partner that understands both headquarters’ requirements and local operational realities can help prevent overseas IT environments from becoming black boxes.