Deployments are registered at one of three tiers. Each increasing tier requires more information to be disclosed about the deployment, allowing for a tradeoff between ease of registration and greater transparency. Below are descriptions of each tier.

Tier 1 (*): Tier 1 entries provide basic information about each deployment, such as the curator, intended use of the data product, a description of the data product, and publication date. These entries may also include more information (e.g., in the form of external links) where available.

Tier 2 (**): Tier 2 entries provide an intermediate level of information about each deployment. They include the information required for Tier 1 entries, plus information about the flavor of differential privacy, privacy unit and privacy loss parameters, and deployment model.

Tier 3 (***): Tier 3 entries provide an advanced level of information about each deployment, including information required for Tier 1 and Tier 2 entries plus additional information. This additional information includes extra details related to the flavor of DP (such as the data domain and unprotected quantities) and a more detailed description of the privacy unit. It also includes information on privacy accounting (on post-processing and composition) and implementation & security, including rationale for implementation decisions.