Each of us trying to convince customers to migrate HANA from anydb. Most probably this is one the most important job among the sales and presales people in SAP EcoSystem.
Year 2014 and 2015 I have visited, met and discussed with many executives (especially with CIOs, IT directors or managers) to help them to understand and digest the benefits of HANA. Thanks to SAP and SAP community we are now in a very good position with the help of great resources, documents and articles to bring customers the benefits of HANA.
Once the customers really get the idea of migrating to HANA, real challenges and questions came across. Here the topics that I have prepared:
For me there are 3 main options: On-premise, Hybrid or Cloud Based. This depends on the customer DNA and regional constraints. In my region EMEA, most of the compaines really want to have their system stand by them. Also because of some the legal constraints (financial documents should be kept within the country) some information should be kept local. So I strongly recommend you to have accurate information of all deployment options and find the best option with customer. Please do not try to push the customer to one option. Here is very good document prepared by Jan Teichmann will really help you Overview of SAP HANA Deployment Options
This is one of the most important task that really impacts the TCO. You need to help customer to shrink the existing data. Use the advantage of HANA and find the best way to shrink data. If you somehow convince customer to reduce data, this will turn back to you with smaller HW requirement and less time for migration. Anyway you may not shrink or reduce the data, however you need to be very accurate regarding sizing. Please read John Appleby's great document Licensing, Sizing and Architecting BW on HANA