Hello,

You're correct -- it does execute on your local PC, using its processing power (I believe it is coded in Java Script).  And, in fact, it can run offline.  Try it -- disconnect your PC from the Internet and you can continue to generate / backtest strategies.  An Internet connection is required to login, but once you've logged-in then most features appear to work.

EA Studio needs the internet to load its content, data files, fx exchange rates, and authentication.

Then the complete workflow is computed on your local machine.

> if we have no connection ...., we can’t any streategy to build, optimise or validation.

I assume if you are offline, you will not need strategies simply because you will not be able to trade them.

> or the website run out

We spend a lot of time and resources to prevent such a case. The website has been online for 15 years and will continue to operate for the foreseeable future.

We designed the EA Studio backend to consume minimal resources and not rely on third-party dependencies. We even created specialised databases for the historical data and application content.

If something very, very extraordinary happens and it is wholly impossible to serve EA Studio online, it will take us a single click to make the complete project public.

If the possibility of EA Studio going offline is your biggest problem with algotrading, you are in a much better position than us.