some queries for storage related issues in appwrite flutter app

as i have installed appwrite on docker inside my macbook and my app is also running on localhost…so when i add some data such as some messages or even if i upload my profic pic in my app then where do will they get stored…inside the phone or inside the docker installed in my laptop…and when i will publish my app then i want to control it using my appwrite profile so currently i manage those database using local host but after publishing my app how can i connect it to appwrite cloud for remote accessing of data.

if you're using appwrite cloud, you would need to set the endpoint to appwrite cloud and use the project id of your project in appwrite cloud

Iss appwrite cloud chargable?

Because i i’m using local host as digital ocean is chargable and also i have not to use so much storage

Free during beta. See pricing info: https://appwrite.io/pricing

Ohkk i have gone through it..and i think it is suitable for initial purpose…as some points are not yet clear to me i am listing them down plase help me

1. Compute :- what does this section means under starter section it is 750k execution
   2.file size limit :- 50 mb for starters..what if i want to upload 200 mb documents..
2. Concurrent connection :- 250 for starter( suppose if i am deceloping a chatting appliction in which i think apprx 2000 users can chat simultaneously with each other…so in this case can 2000 users directly chat simultaneously or only 250 out of them can use at a time