Website Maintenance is ongoing work to keep a website secure, updated, functional, fast, and aligned with business needs.
It matters because development decisions affect speed, security, scalability, tracking, SEO, and maintenance. A site that looks good but is fragile or hard to update can quietly hold back every marketing channel.
Example
A maintenance session includes a backup, reviewed updates, and a check that the contact form still submits successfully. Recording those checks helps distinguish an installed update from a working site after the update.