@Victor Prasad Thanks for reaching here! AI Search is a PaaS Service and is not a direct user-facing service but requires an application to be built to be exposed to users and to handle the customer calls, also there is no low-code support for URLs in our service, but a URL crawler library will have to be used instead to get the data and push the data in the index.
Based on the description you provide, it looks like they are looking for a close-to SaaS search service.
I would start with Bing Custom Search https://video2.skills-academy.com/en-us/bing/search-apis/bing-custom-search/how-to/quick-start to check if that would satisfy all of your business needs.
Please let us know.