A SaaS application is an integrated business solution tailored to meet the needs of business clients. It’s a highly customizable app that might include various access levels for different roles in a company, sophisticated admin panel, analytics, service desk, and many other applications to satisfy specific needs of enterprise customers.
Thus, to build a SaaS application, you need to heavily invest resources into its development, meinanance, and support, which is much more money- and time-consuming and requires a comprehensive SaaS development approach than building a mobile or web application.