How to consider market size in enterprise SaaS? The bottom-up approach

Investors prefer bottom-up approach in business planning, especially in sectors like enterprise SaaS.
Why so?

How to calculate the market size and assess your ACV (Annual Contract Value) to be on the right and real track? Why and how to consider the length of your sales cycle and required salesforce efforts in the context of those ACVs?

Guillaume Fournier, Credo Ventures and Henri Tilloy, Partech led us through their approach in bottom-up planning and market size assessment in 3 mins.