This memorandum documents the multi-year plan for the Census Information Technology (IT) evolution from the current 2015 Solution Architecture to the 2020 Target Solution Architecture that will be capable to support the 2020 Census operations.

The 2020 Census Memorandum Series
The 2020 Census Memorandum Series documents significant decisions, actions, and accomplishments of the 2020 Census Program for the purpose of informing stakeholders, coordinating interdivisional efforts, and documenting important historical changes.

A memorandum generally will be added to this series for any decision that meets the following criteria:

1. A major program level decision that will affect the overall design or have significant effect on the 2020 Census operations or systems.
   
2. A major policy decision or change that will affect the overall design or significantly impact on the 2020 Census operations or systems.
   

Visit 2020 Census on Census.gov to access the Memorandum Series, the 2020 Operational Plan and other information about preparations for the 2020 Census.