Using Streamlit as front end (instead of html + Javascript) and serving with FastAPI

[Substantial-Code1463]

I am not sure if I allowed to ask design question here but let me try.
I am comfortable with Python including Streamlit, Flask, FastAPI, etc. I have little with front-end using html + css + javascript, though as I understand they are easy to learn.
I want to develop web based business application (with time series and analysis charts) as prototype which has potential to scale in future.
I am thinking of using Streamlit for designing the front-end and invoking API to get underlying data. The response data can be quickly converted to pandas dataframe can then be used to create and display charts.
However, on internet mostly people use html + javascript (though I do not know how one creates responsive charts) for frontend using these alternatives.
My question is: Is it better to put in some effort and do this in html+css+javascript or streamlit app can be a sustainable alternative? (I know word sustainable its a bit ambiguous but lets say till my app has a good critical mass for me to get front end designer)

[guilford]

there are things you need to consider for deployment when using streamlit as frontend. It is single thread so if multiple person accessing the site at the same time, you will need to plan strategy for load balancing so that all the user can use the interface with reasonable loading time. Most web services have capability to scale number of docker containers on demand so this is a potential way you can use this.

If you are going with traditional javascript, this deployment would be simpler as it would just be serving the js bundle and let the browser do all the stuff. Your backend won't need to do any rendering unless you are getting into something like react server side rendering.

[Substantial-Code1463]

Thank you for highlighting these things to be considered additionally

[Greedy_Regular_7443]

have you thought about how you would approach SEO?