[debarshri]

Retool and others are internal application platforms. The concept exists since the dawn on computer. SAP, IBMs of the world always had one offering like this.

You always need an internal platform may be for seeing the order status of the shipped product or some customer data etc. The consumer of the tool is a customer service agent or an internal employee etc. These tools does not have to be perfect , they have to be functional.

It has always been a huge market as it saves ton of money for an org. These days as building UI and APIs have become democratized, the market for internal applications platform have become very competitive.