single-tier

adjective
UK /ˌsɪŋɡl ˈtɪə/
US /ˌsɪŋɡl ˈtɪr/

Having just one level or layer.

The cake was single-tier, so it was small and easy to carry.


OTHER MEANINGS

2. Having only one rank or group in an organization or system.

The company switched to a single-tier management structure.

3. Consisting of a single row of seats or shelves.

The stadium's single-tier stand held only a few hundred fans.

4. In computing, using one level of storage or architecture.

The new server uses a single-tier storage design.