What is the top factor impacting application performance? According to analyst Julie Craig, the right answer is there is no right answer. This means performance bottlenecks may be caused be code level issues, network or servers, or even application deployment.
<blockquote?In short, almost anything that touches an application either improves or degrades performance. Determining whether that is infrastructure, code, data, the network, the application architecture, the endpoint, or another application is the name of the game — and the big reason why APM solutions are so valuable.
You can read more here: The Top Factor Impacting Application Performance: The Right Answer