The document provides an overview of similarities and differences between academic and commercial software development. It discusses types of software like bespoke vs product-based and their complexities. Key factors in commercial software sales like convincing decision-makers during demos and end-users during daily use are outlined. Important aspects of making software sellable like always considering the customer, focusing on aesthetics, and frequent releases are highlighted. The role of the developer in maintaining quality, using mainstream technologies, and not becoming too specialized is also discussed.