The Corona disaster accelerated the shift to remote work and digitalization, leading to the adoption of SaaS in various business areas. While SaaS has the advantage of being easily deployed according to the needs of business divisions, there are serious downsides caused by each division's use of several different SaaS products in combination. In this document, we will organize the risks posed to companies by the chaotic SaaS situation, discuss the issues and solutions, and look at the benefits that can be gained by replacing the SaaS that has become chaotic in each department with a business app development platform. We will also organize the requirements for a business app development platform and introduce the features of ArielAirOne, a business app development platform that can handle the advanced and complex development requirements unique to large companies with no programming.