Microsoft Excel is a proprietary commercial spreadsheet application written and distributed by Microsoft for Microsoft Windows and Mac OS X. It features calculation, graphing tools, pivot tables, and a macro programming language called Visual Basic for Applications. wikipedia.org

Document review (also known as doc review) is a task performed by attorneys in anticipation of legal proceedings or during the discovery phase of litigation.

Compliance means conforming to a rule, such as a specification, policy, standard or law. Regulatory compliance describes the goal that organisations aspire to achieve in their efforts to ensure that they are aware of and take steps to comply with relevant laws and regulations. wikipedia.org

Conformance testing — an element of conformity assessment, and also known as compliance testing, or type testing — is testing or other activities that determine whether a process, product, or service complies with the requirements of a specification, technical standard, contract, or regulation. wikipedia.org

Due diligence is an investigation of a business or person prior to signing a contract, or an act with a certain standard of care. wikipedia.org