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The differences between cloud ERP and on-premise ERP are not limited to deployment methods. We explain in technical detail how to make the optimal choice according to business requirements, operational structure, and security needs.

1. Two Deployment Methods for ERP
ERP (Enterprise Resource Planning) is a core system that integrates and manages sales, production, accounting, inventory, and more. There are two main deployment types for ERP.
One is cloud ERP, where you use a system provided by a vendor via the internet for a monthly fee. The other is on-premise ERP, where the system is built and operated on your own servers.
Which one is suitable depends on your company's business characteristics, system operation structure, and security policies.

2. Features of Cloud ERP and On-Premise ERP
Cloud ERP is characterized by its quick implementation and lower initial investment. Since infrastructure maintenance and operation are handled by the vendor, it is easier to introduce even in companies lacking IT personnel. It is also highly compatible with network connections between offices and remote work.
On the other hand, customization is limited, so it may not be suitable if you need detailed adjustments to match your business. Also, as it relies on internet connections, risks during communication failures must be considered.
On-premise ERP allows detailed customization to match internal business processes and can more easily meet internal security policies and compliance requirements. In the long run, it may also be more cost-effective.
However, initial costs tend to be higher, and server management and system maintenance must be handled internally, which increases the IT department’s workload.

3. Points to Compare and Consider When Implementing
When comparing cloud ERP and on-premise ERP, the following perspectives are important:
- Initial and running cost structure: Cloud is subscription-based, on-premise involves asset purchase. It’s necessary to compare using TCO (Total Cost of Ownership) over the long term.
- Need for customization: If operations can fit standard business processes, cloud is suitable; if you need to fit unique business processes, on-premise is better.
- Operation and maintenance structure: Whether you have resources to maintain the system internally or need to outsource affects your choice.
- Security requirements: In some industries, it is necessary to keep information within the company, so on-premise is recommended.
- Implementation speed and scalability: If you need quick deployment or rapid expansion, cloud is advantageous.

4. Decision Criteria to Avoid Failure in ERP Selection
The key to ERP selection is accurately understanding your business requirements and choosing the deployment method that fits them. The following criteria are the decision axes:
- Is there scalability to support future business expansion?
- Can it be operated with in-house IT skills and resources?
- Is data collaboration with external parties needed?
- Can it comply with industry security and legal requirements?
- Can future migration plans (e.g., from on-premise to cloud) be envisioned?
Regardless of the deployment method, it is important to make decisions not only from the perspective of operational efficiency but also with a view to accelerating management decisions and enhancing corporate value.

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