Picking up and moving as-is to cloud will cost more. Going to Azure PAAS won't save you any appreciable money because whatever opex you save will be eaten by licensing.
Switching your workload to infrastructure as code and going all in on CI/CD and serverless will, if you're any decent sized shop, save you an absolute shit-ton of money. You can reduce headcount and reduce capex and opex by orders of magnitude while delivering much more stable and reliable products to your customers.
Working on my PC... Remember that I have to do something like pay a bill, open a support ticket etc... I click new tab.... While it's opening I tell myself that I just need to remember for a few more seconds but by the time the tab opens, it's gone. And I just sit there staring at the new tab wondering if it will come back to me.
I had this comic book, it was a special edition sold at Radio Shack when I was a kid. And yeah that pocket computer was just a big calculator that had a lot of keys.
Lifting and shifting an existing monolithic architecture to the cloud with zero modernization changes will result in a higher cost than leaving it in a data center.
Converting the application to use as much serverless and microservice-based technology as possible is where the cloud ROI is.
Picking up and moving as-is to cloud will cost more. Going to Azure PAAS won't save you any appreciable money because whatever opex you save will be eaten by licensing.
Switching your workload to infrastructure as code and going all in on CI/CD and serverless will, if you're any decent sized shop, save you an absolute shit-ton of money. You can reduce headcount and reduce capex and opex by orders of magnitude while delivering much more stable and reliable products to your customers.