> For the complete documentation index, see [llms.txt](https://cardano-wiki.gitbook.io/cardano/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://cardano-wiki.gitbook.io/cardano/scalability/scalability-contents/taking-a-closer-look-at-iog-research/scaling-cardano.md).

# Scaling Cardano

Scalability is essential for a blockchain network to support an expanding user base, and ensure growth without sacrificing throughput.

Scaling a blockchain usually requires a combined approach with a diversity of solutions to suit every situation and project. For example:

* Layer 1 solutions: upgrades applied directly to the main-chain protocol.
* Layer 2 solutions: additional chains (sidechains) or layer 2 solutions (ZK rollups) that boost main-chain performance.