WordPress hosting takes care of you and performs routine tasks on your behalf. It may be more expensive, but if you feel like you can’t handle your website on your own, you’re better off with this service. If you’re tech-savvy and have a little programming knowledge, you can do it yourself and achieve reasonably good results without having to pay a fortune. Having a managed service on a very high-traffic site will definitely show some improvements in performance. But if your site gets thousands of visitors per day, you will only notice a marginal difference. Be sure to do a cost-benefit analysis and take a trial account before you actually put your money into it.