Time to first byte means how long it takes for the server to send the first piece of data to the browser. If it is slow, the whole page feels delayed. This can be caused by poor hosting, heavy server load, or slow scripts. Moving to a better hosting provider can help a lot. Caching is also useful because it stores ready versions of pages. Reducing heavy plugins and scripts can improve response time. Faster servers make a big difference. What server changes have shown clear improvement?