What is defined as any written or digital communication between parties?

The term that encompasses any written or digital communication between parties is correspondence. This definition includes a wide range of information exchanges, such as emails, letters, and notes, which serve various purposes in both personal and professional contexts.

Correspondence is crucial for establishing clear communication, conveying information, and maintaining relationships. Unlike reports, which are more structured documents focused on data analysis or progress updates, correspondence is broader and can involve informal and formal communications alike.

Invoices and memos, while also forms of written communication, serve specific functions: invoices are used for billing and financial transactions, and memos are typically used for internal communication within an organization. Therefore, while they are types of correspondence, they do not encompass the entirety of what correspondence represents in its broadest sense.