Few people want or have enough time to update their website. It's a chore. Your website could provide you with password-protected management systems at the back that automatically drive what the public sees at the front, so you never have to "update your website", it's already done.
For a retail client, we built an in-store display that was driven through the website. One edit changes both, and keeps the message consistent.
A dynamic website uses your customer's data for everyone's benefit, let the crowd help your business.