Are HTML pages indexed by search engines?

Are HTML pages indexed by search engines?

Hello

I am wondering if HTML Pages (created in Creator and made public) will be/can be indexed by search engines?

We would like to start developing modules to appear in our website, but need the resulting pages to be indexed. By this I mean we would have a search function page - let's say search for  property - and when that property is found and selected, the relevant property page would be indexed.

Is this possible please?

Many thanks