# Architecture Pattern and Guidelines

*This chapter provides more concrete architecture guidelines on how to design different architecture patterns within a dataspace. Beside the introduction and explanation, trade-offs are highlighted.*

## Data Space Governance Authority

*Explain the DSGA from an architectural pov*

### Federated or Central

*Provide insights on federated or central DSGA and corresponding trade-offs*

### Decentral

*Provide insights on decentral DSGA and corresponding trade-offs*

## Catalogs

*Explain Catalogs in the context of dataspaces from an architectural pov*

### Federated or Central (Marketplace)

*Provide insights on federated or central catalogs and corresponding trade-offs*

### Decentral

*Provide insights on decentral catalogs and corresponding trade-offs*

## Observer

*Explain Observer from an architectural pov*

### Federated or Central Escrow

### Decentral

*Provide insights on decentral observability and corresponding trade-offs*