Our organization is under 200 people. I am just starting to learn about all the options and it seems to change over time. My understanding is that the business essentials and premium plans use exchange plan 1 which has no archiving. It seems we may need plan 2. Can you add plan 2 for the $4 difference?
Also wondered if this can be done to a mixture of essential and premium users. So an essential user would be $9 with exch2, and a premium user would be 16.50 with exch 2. This idea would be limiting the number of premium users.
Another thought is whether it may be better/worse to use an archiving service outside of 365. We currently use a barracuda with our on-premise exchange.
What plans are you referring to in your question? Kindly explain.