# The advantages of Account-Centric Indexing

Account-Centric Indexing is a novel indexing protocol tackling account-level semantic data computation and retrieval. Its User-Defined Function (UDF) design allows anyone to express semantic values through a simple functional interface.

Using Account-Centric Indexing, developers can access account state changes across smart contracts and blockchains in real-time. Developers can also configure to easily index entire blockchains, or designate the wallets-of-interests and index their transactions across all EVM chains. 

Unlike traditional 'contract-centric' indexing found in Subgraphs which mainly addresses in-Dapp data retrieval, Account-Centric Indexing focuses on resolving account profiles across Dapps and chains, and thus tackles the following needs directly:

1. Configurable indexing on accounts of interests
2. Multi-chain data coverage
3. Covers use-level specific use cases

Thus account-centric indexing provides the following main advantages.:

1. Real-time access to the account-level states and history
2. Full account-level states and history coverage, including all smart contracts & chains the account has footprints on.
3. Horizontally scalable

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