Every piece of software installed on your server must be kept up-to-date if you want your site to run in tip-top shape. This is why you use tools built by trustworthy developers and designers who are accountable to their software and keep it updated on a regular basis.
There are a number of reasons why a WordPress developer might see fit to update the code of their software and send it over to your website:
• Security patches: code is highly susceptible to infiltration and infection, which is why you’ll often see security updates issued for the purposes of patching bugs.
• Performance upgrades: even if you’ve installed well-trusted and well-reviewed plugins and themes, performance can degrade over time as software or code becomes obsolete. Performance patches are issued to ensure that your WordPress software doesn’t have a negative effect on speed.
• New features: the web is always changing, which is why any good developer (including those behind WordPress itself) will pay attention to changing trends. As they change, it’s crucial to keep software in line so that websites may continue to align with the modern user experience.