What is the difference between Ambu bags and conventional ventilators

An Ambu bag is a physical expedient that can support breathing which obligatory human interference in every breath sequence, patient in critical circumstances or ICU are less probable to support or organize/reply to such devices, so an Ambu bag is more obliging in case of shock patients, in long-lasting circumstances, or where the long-duration provision or in case of treatment the Ambu bag provision is not a very recurrent choice by healthcare suppliers. While a ventilator can take control over the human inhalation sequence totally without widespread human interference(except initial format) It can control the breath and exhalation sequence of gasping in a very exact manner even if the patient is completely non-cooperative/comatose state. The ventilator can also influence the oxygen and air fraction, ventilators have a more data-driven measured method.
To abridge the Ambu bag bought from the Ambu Bag Suppliers is a physical expedient for short provision, while ventilators are fully instinctive control for longer provision with very little human interference. In a COVID-19 state, ventilators are more appropriate and faultless expedient as likened to Ambu bags.