Mmm... when you step down to get someone more suited for the new path a company is going to take, you have someone lined up to replace you - to ease transition

Mmm... when you step down to get someone more suited for the new path a company is going to take, you have someone lined up to replace you - to ease transition and alleviate concerns. You don't put an interim CEO from HR and finance while your are searching for a "seasoned executive in the electronics field", that's what you do if the current CEO is hurting the business and needs to be pushed out quickly.