Most Salesforce certifications are valid for two years from the date of completion. To maintain your certification, you must complete maintenance requirements, which typically involve earning a specific number of Trailhead badges and/or passing release-specific maintenance exams. Salesforce releases regular updates, and staying current with these releases ensures that your skills remain relevant. Salesforce provides resources, such as release notes and webinars, to help you stay informed about the latest platform features and enhancements. By meeting the maintenance requirements, you can extend the validity of your certification for an additional two years.