Data Layout

There are three places where data can be stored on the EVM:

• stack: 256-bit values placed on the stack that are loaded using DUP operations.
• storage: 256-bit address space where 256-bit values can be stored. Accessing higher storage slots does not increase gas cost.
• memory: 256-bit address space where 256-bit values can be stored. Accessing higher memory slots increases gas cost.

Each data type can be stored in these locations. How data is stored is described in this section.