You should run regular technical SEO audits to maintain your search ranking. It also prevents serious issues developing that could reduce online visibility. As a general rule, you should run multiple audits every year (eg: every quarter). You can use automation to run audits more frequently at no additional cost or manual input. For example, enterprise brands generating a lot of inbound links can run weekly, automated link audits to detect anything problematic. Then you can take action before they cause damage.