Instant Communications (Slack)

Can you use an alternative method e.g. paper – based alternative? If so where is this stored?
Would be an incumbrance because we can't access previous messages but we could very easily use other messaging platforms such as teams, google chat or discord.
Date Completed
February 4, 2023
Rate the impact of these systems failing in terms of severity (1 – 10) 1 being low, 10 being high