===== b. Change Log =====
[[dido:public:ra:0.front:start|return to Front Matter]]

__**Changes made between version 2.0 and 1.0**__ \\
The major change was moving the content from a Microsoft Word document to a Wiki. This transition allowed for content to be accessed on a section by section basis, easy cross-referencing of each section, and the ability to easily determine not only how many times a section is referenced, but also where. Specifically:
  * Technical section \\ 
    o Reorganized into a series of technical views, citing relevant technical & de facto standards for each \\ 
    o As appropriate, tools to support technical views: added
  * Taxonomy of data and nodes: added to Technical Views
  * [[dido:public:ra:xapend:xapend.a_glossary:g:governance]] for managing the DIDO Architecture: added
  * Glossary of Terms (Appendix A): added
  * A new section on technical and de facto standards (Appendix B): added \\ 
    o Data sheets for technical standards: added \\ 
    o Data sheets for de facto standards: added
  * A new section for tools (Appendix C): added

__**Changes made between version 3.0 and 2.0**__
  * Architectural Views & Governance (Sections 2 & 3): General clean-up and small additions, e.g., a new Technical View ([[dido:public:ra:1.2_views:2_tech_views:defilayers | Decentralized Finance (DeFi) Layers]])
  * Requirements (Section 4): added
  * Glossary (Appendix A): expanded with additional terms
  * Standards Organizations (Appendix B) - standards added and/or updated
  * Hardware Architectures (Appendix C) - added
  * Operating Systems (Appendix D) - added
  * Tools (Appendix E) - no change
  * DDS Quality of Service (Appendix F) - added, to be updated in 3.x
  * Tests (Appendix G) - added
  * Acronyms (Appendix H): expanded with additional entries
  * Cognitive Model (Appendix I) - added
  * Governance Model (Appendix J) - added

__**Changes made between version 4.0 and 3.0**__
  * Data Taxonomy (Section 2.3.4): rewritten and expanded
  * Digital Assets (Section 2.3.5): added
  * Other changes to be noted
 
<color red><todo @char>make sure change list for 4.0 is complete</todo></color>

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