The following are five factors that should be considered in deciding how many post-release support personnel will be needed.

The following are five factors that should be considered in deciding how many post-release support personnel will be needed.

Answer: i) how many customers/users are expected;
ii) the quality of the product at release time in terms of known bugs that are still in the product;
iii) amount of user training that was provided before release;
iv) projected number of problems and changes that may be arriving, and
v) how well trained are the support personnel.