I am trying to improve the loading time of the website apprentus notament site on mobile but I cannot understand this error ( Reduce server response times (TTFB) ) , what is it and how can I improve it
This is the time it takes from sending the request to the server until the server responds with something. There isn't a silver bullet to fix this as every website is different but things you need to look at are things like - slow and/or unnecessary queries - is caching set up correctly