Why agencies and freelance web developers managing 5-30 sites struggle to move from projects to monthly retainers

https://www.bookmarkingqueen.win/can-you-resell-seo-services-under-your-brand-a-practical-guide-for-agency-owners

If you run a small agency or freelance web shop with 5 to 30 client websites, you've probably thought about shifting from one-off projects to monthly retainers