a smart contract becomes much more useful when it can interact with other smart contracts.
that’s basically what people mean by composability.
instead of every application working on its own, one application can use the functions or assets of another application.
think of it like building with different pieces.
one piece handles the BTC, another handles a market, another handles a swap, and they can all work together because they’re running in the same programmable environment.
this matters when you bring BTC into
@Starknet through strkBTC.
once BTC is represented as strkBTC, it can interact with smart contract applications that are built to work with it.
so you’re not looking at each DeFi application as a completely separate destination.
the applications can become building blocks that work together around the same BTC.
that means developers don’t have to build every part from scratch. they can build on top of applications and infrastructure that already exist.