Formulate the question so that it is immediately clear what you are talking about?

Question

CMS

Describe your question in detail to get a more accurate answer....

Answer 1

Even if you are offered a solution here, then judging by the questions asked, you are unlikely to be able to finish it for your needs without outside help.
Therefore, at this stage, IMHO, you need to look not for a solution, but for a developer who will be able to choose and implement it.
Those. you are more likely not to a toaster, but to freelancing or hunting.

Answer 2

You are already talking about thousands of users online, but still have not decided on the architecture. Apparently - at the moment you have no idea how everything should work. I would advise you to start with the development of a technical task together with a professional, and choose a platform only after considering all the needs and nuances of the future project.

Answer 3

Django and Drupal are two different things.
The first is the Python programming language framework, and the second is the PHP CMF. You won't be able to move. For greater compatibility, you will have to use one database, for example, good old MySQL. And that, only to save a DB.

Answer 4

The phrases "simultaneous online from 1000 hosts" and "the budget is not very big" do not really fit together.
Drupal will allow you to quickly assemble functionality using ready-made modules, but with such a load you will have to invest in a server. Development on the framework will be much more expensive, but the result will be less demanding on resources, so the cost of the server will be lower.

Answer 5

I would recommend Bitrix. With proper configuration, it will also pull 10,000 hosts without any problems.
Pretty easy to learn for a content manager, and a lot of good programmers.
Would you have announced the budget or something, otherwise everyone has a different concept of "small")

Answer 6

I recommend Yii. CMS like drupal, wordpress, joomla do not match your parameters (high load, clear admin panel, SEO-friendly, documentation, etc.). Such a project requires an individual solution, no other is given. Therefore, it is better to take a framework and cut the project for your tasks.