not "interest", but yea, pretty much interest
Mudarabah is for companies that want loans, either startups or existing companies that want to expand. The not-a-loan is structured as a joint venture with profit and loss sharing, often with a new holding company. The bank becomes a part-owner of the holding company in a way that entitles the bank to collect profits on the joint venture up to a certain percentage of the original not-a-loan. Again, functionally identical to interest, but officially not.
It is worth noting that conservative Islamic clerics have raised objections over these, but have been overruled everywhere that money rules.
i think this comment is the second most interesting one in the whole thread, following the one that pointed out that svb's stock fell 60% today (true: https://finance.yahoo.com/quote/SIVB/)
related links:
https://en.wikipedia.org/wiki/Islamic_banking_and_finance
https://en.wikipedia.org/wiki/Murabaha
https://en.wikipedia.org/wiki/Profit_and_loss_sharing#Mudara...
https://en.wikipedia.org/wiki/Profit_and_loss_sharing#Mushar...