cloud or on-premise growth ???

Very intriguing and straightforward question, but as a presale expert, you should have a prepared response in the form of a cost-benefit analysis from answer 2 and other calculations to compare costs,

• Energy and cooling costs for the infrastructure in place
• IT administration costs include physical and logical security.
• Add 9% risk of losing critical data due to errors.
• Hardware age, residual value, CAPEX and OPEX requirements for hardware and software.
• Loss or loss of revenue due to non-availability of critical systems or excessive availability of non-critical systems, respectively
• Skills, training, real estate and costs COLA.
• The above costs are just a hint to create a good comparison, but there are many others that are case-specific and become an important input for the final decision-making process.