Managing websites

We are taking over the management of a group of websites , they sell product online. This will involve SEO, product offering maintenance, the development of a thorough understanding of how the sites work, recommending “improvements” or solutions to foreseeable issues, troubleshooting for the websites as issues arise, a daily check in on sites to ensure things are flowing correctly, and being part of a project team that re-directs the sales data to a new accounting program.