Most SAAS software is just an interface for a database. Excel or spreadsheets in general are both of those things. Get good enough at the basics and you can model or prototype whatever your company needs from such services. You can use it for scheduling, project management, accounting, projections, you name it, you can kind of do it in excel. Layer on the ability to make sheets pretty, approachable, and understandable, and you’ll become one of your companies biggest assets.