Companies use different approaches to memo writing, with some focusing on building a references culture for long-term storage of knowledge, while others adopt a more live communications written culture for working memory. Companies like GitLab lean towards a references culture with an extensive wiki of internal processes, allowing for efficient employee turnover and asynchronous communication. In contrast, companies like Microsoft and Amazon adopt a working memory model of writing, where the emphasis is on communication around discrete decisions rather than creating reference documentation. While this approach may seem wasteful as the artifacts become irrelevant once the decisions are made, the process of writing and thinking through the arguments is considered valuable in aiding the decision-making process.