When adopting or switching an EMR, the first thing you decide is whether to choose a "cloud" type or an "on-premise" (installed) type. In recent years, more clinics are comparing cloud EMRs with on-premise, but each has situations it suits and doesn't, and judging by cost alone can lead to regret. This article thoroughly compares cloud and on-premise EMRs across seven angles and neutrally explains how to choose the right fit for your clinic.
The Basic Difference Between Cloud and On-Premise
- Cloud type: Data and EMR functions are placed on the vendor's servers (data centers) via the internet, and accessed from a browser or app
- On-premise (installed) type: A server is installed within the clinic, and the system runs entirely on the in-clinic network
On-premise types running on in-clinic servers used to be mainstream, but with advances in connectivity and security technology, cloud types are now rapidly spreading.
A Thorough Comparison Across Seven Angles
| Aspect | Cloud | On-Premise |
|---|---|---|
| Initial cost | Easier to keep low | Tends to be high |
| Monthly/operating cost | Mostly flat-rate subscription | Maintenance contract + renewal |
| Deployment speed | Fast | Slow due to server setup |
| Updates | Automatic, ongoing | Manual work each time |
| Disaster/BCP | Strong (off-site storage) | Risk of in-clinic damage |
| Scalability | Strong for branches/multi-site | Build per site |
| Network dependence | Requires constant connection | Works offline |
1. Cost (Initial and Monthly)
Because a cloud type does not require an in-clinic server, initial costs are easier to keep low, and it is mainly subscription-based on a monthly basis. On-premise types tend to have higher initial costs due to server purchases, and you need to budget for hardware renewal every few years.
2. Deployment Speed
Cloud types require no physical server construction, so they can be deployed in a relatively short time. On-premise types take time for equipment installation and setup.
3. Updates and Revision Support
Responses to medical fee revisions and security updates are generally reflected automatically on the vendor's side for cloud types. On-premise types incur manual update work each time.
4. Disaster Recovery and BCP (Business Continuity)
With a cloud type, data is stored in the vendor's data center, so even if the clinic is damaged, data is less likely to be lost and can be more easily recovered from another device. With an on-premise type, if the in-clinic server is damaged, there is a risk of data loss, so designing your backup operations is important.
5. Scalability and Multi-Site Support
If you need access from multiple sites or outside the clinic—for branch expansion or home care—a cloud type is advantageous. On-premise types require building a server at each site.
6. Network Dependence
Cloud types require an internet connection, so the stability of your line is important. On-premise types run entirely on the in-clinic network, so they are less affected by internet outages.
7. Security and Guideline Compliance
The simplistic view that "cloud is dangerous and on-premise is safe" is not accurate. Either method is required to comply with the Ministry of Health, Labour and Welfare's "Guidelines for the Safe Management of Medical Information Systems" (the so-called Three Ministries' Two Guidelines). For cloud types, an important checkpoint is whether the vendor provides infrastructure and operations compliant with these guidelines. For on-premise types, the clinic itself bears a greater share of physical and technical safety management within the clinic.
How to Choose by Clinic Size and Practice Style
- Newly opening / small clinics: Cloud types, which keep initial cost and operational burden low, are a strong option
- Practices with branches or home care: Cloud types, strong in external access and scalability, are suitable
- Facilities emphasizing an in-clinic-only network: If offline operation matters, on-premise is also an option
- Clinics that cannot spare staff for IT maintenance: Cloud types, with light operational burden thanks to automatic updates, are a good fit
AI-Native Design That Maximizes the Advantages of Cloud
The merit of a cloud type is not merely being "serverless"—it is being able to "practice from anywhere, always in the latest environment." Pottech's "AI Karte" has a cloud, AI-native design, and with multi-device support, you can access the same data regardless of location—exam room, reception, or a patient's home. AI features such as automatic SOAP generation via voice input and AI rezept checking are also always available in their latest state on the cloud foundation. Of course, it runs on infrastructure compliant with the Three Ministries' Two Guidelines, clearing the security checkpoints as well.
References and Sources
For the details and latest information on systems and requirements, always check the official sources above.
Conclusion
Rather than one being superior, the optimal answer between cloud and on-premise changes depending on your clinic's size, practice style, and IT operations. If you prioritize initial cost, operational burden, disaster recovery, and scalability, a cloud type suits you; if you prioritize in-clinic completeness or offline operation, an on-premise type is a better fit. Whichever you choose, the keys to a successful deployment are compliance with the Three Ministries' Two Guidelines and verifying usability along your actual clinical workflow.
Through providing AI Karte, Pottech aims to be the ideal business partner for clinics—improving the working environment for physicians, nurses, and medical clerical staff, and supporting clinics in fully realizing what they want to achieve.
For more details, please feel free to contact us.