Whats a good solution for the server [closed]

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http://serverfault.com – I have a web server seated at AWS. For some reason, one of my clients has difficulties where he gets slowness when accessing the websites from the server. I have checked the server and there is nothing spikes happening on the load. It looks like his internet connection problem. My question is what could be a good solution for those having a slow internet connection so that they can access the site fastly? I was thinking the following. -use CDN as it's available to their country. Any response is much appreciated. Thanks. James (HowTos)