MTBF is influenced by a variety of factors, ranging from the inherent design and quality of the system or component to external or variable elements such as the environment and usage. Enhancing the reliability and availability of a system or component can be achieved by addressing these factors. For example, improving the design can involve making it more robust, simple, modular, or redundant and avoiding potential causes of failure. To improve quality, ensure that the system or component meets specifications, standards, and requirements and is tested, verified, and validated before and after delivery. You can also protect a system or component from adverse environmental conditions like temperature, humidity, dust, vibration, or corrosion by providing adequate ventilation, cooling, or insulation. Additionally, operating a system or component within its limits and according to instructions and guidelines can help avoid overloading, misusing, or abusing it. Lastly, regular and preventive maintenance and inspection should be done to repair or replace a system or component as soon as possible after a failure.