Regular updates are required to maintain site speed, security, and longevity. As the agency responsible for building a site, you are in the best place to maintain it for your client. Sit down with your client early on; spell out the frequency and types of updates that they should expect to do. Show them some of the benefits of regular site maintenance:
An outdated CMS, theme, plugin, or other software can create security holes attackers will take advantage of to breach your clients’ sites.
Creating a full backup from the server ensures you have a usable copy of the database and files. Regular manual backups are important even if you use a backup plugin, since plugin errors can sometimes render backups unusable.
Attackers can be inconspicuous with their malicious activities. Bad code quietly placed on your site can quickly get you banned by search engines.
Site Updates for SEO
It’s important to keep content fresh to maintain your position in search engine rankings. Google’s frequent algorithm changes are well documented. Not keeping things optimized can cause your site to drop in (or disappear from) search results
The block of text here is from the ebook @ https://goo.gl/Q8Tvua