> For the complete documentation index, see [llms.txt](https://bavo.gitbook.io/bavo/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://bavo.gitbook.io/bavo/technical-concepts/izk.md).

# IZK

**Interactive Zero-Knowledge (IZK) Proof** is a type of zero-knowledge proof system in which the proof involves multiple rounds of communication between the prover and verifier, often referred to as designed verifier zero-knowledge protocols. Unlike zk-SNARKs or zk-STARKs, which are non-interactive, IZK requires ongoing interaction between the parties.

IZK offers several advantages, making it a promising building block for Web3 applications. These benefits include:

* Scalability for handling large statements.
* Lower computation and memory costs.
* No need for a trusted setup.

However, IZK requires "more interactions" between the prover and verifier, involving multiple rounds of communication. These interactions resemble those used in **Secure Multi-Party Computation (MPC)**, and many cutting-edge IZK algorithms are built on MPC principles.


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