Cloud, or on demand model, is becoming recently even more popular and this increasing trend among companies is actively supported by big software vendors, including SAP, that promote it - by developing and offering new products via this type of delivery only.
There are a lot of benefits by choosing the cloud, although not for every solution and not for every customer. Some customers learned this lesson and are surprisingly going back to on premise architecture - we know about one case.
Sending customer data and setting up applications on the cloud requires usually much less effort and time than the reverse process. Depending on scale, such a migration will also require more or less involvement of vendor, including scheduled downtimes, which is not required with the opposite process.
We were very interested in the reasons for undertaking the uncloud project, and these were provided by the Customer, from most to least important:
• Not possible (or not in line with company policy) to integrate cloud applications with on-premise ones
• Not possible to access certain cross-application processes, including BI data due to security
• Increased cost, and estimated future increase in cost
• Concerns about security and data sovereignty in general.
