# General
> IPOR Fusion's architecture is modular, built with flexibility and composability in mind.
It consists of three core elements:
* [**Vaults**](/build-on-fusion/architecture-overview/what-is-a-fusion-vault.md) (ERC4626 compliant) accept deposits and put capital to work by deploying it in a series of strategies that will be dynamically managed by Alpha Keepers (Alphas for short);
* [**Fuses**](/build-on-fusion/architecture-overview/what-is-a-fuse.md) are small contracts that connect vaults with specific actions within DeFi protocols;
* [**Atomists**](/build-on-fusion/architecture-overview/what-is-an-atomist.md) are curators that design the strategy of the vault;
* [**Alphas**](/build-on-fusion/architecture-overview/what-is-an-alpha.md) are the off-chain agents or bots responsible for maintaining the strategy operations of a specific vault. They run off-chain automated software to optimize asset allocation by calling functions on Fuses within the limits set by the Atomist.
Diagram of operational vaults with fuses and alpha connected
## Asset Ownership
All deposited assets are held by the vault and can not be shared in any way between multiple vaults. That makes things like taking loans against deposited assets possible so that the strategies like leveraged looping are possible on Fusion.
## Upgradability and Configuration
Vaults and fuses are not upgradable. Their functionality, however, can be extended by connecting new fuses, or removing unused fuses. Vaults allow for a certain degree of configuration (see more here: [Configuration](/build-on-fusion/atomists/vault-configuration-step-by-step.md))
## Supported Blockchains
Fusion is currently available on the following blockchains.
* Ethereum
* Base
* Arbitrum
* Unichain
* Ink
* Avalanche
* Plasma
* TAC
Depending on demand, Fusion will also be deployed to other blockchains.
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