These days there probably is not many good reason to create a new 32-bit application, but migrating existing applications to 64-bit is not so clear cut. From what can be seen by Microsoft’s actions over the years, it appears they are strongly committed to ensuring the tremendous investments their customers have made in building Windows apps continue to work properly for the long-run. For example, Windows 10 runs both 32-bit and 64-bit apps, and there has been zero indication Microsoft has plans to discontinue 32-bit support. On the other hand, as this guide has outlined, significant work and tradeoffs may be required to migrate your PowerBuilder application to a 64-bit architecture. As such, making the decision to migrate to 64-bit simply to stay up to date may not necessarily be the best decision for your business.