Full website maintenance?

How do I choose a platform that provides not only development, but also full support for e-commerce projects, including technical support, updates and website optimization?

It was important for me to speed up the site and optimize its performance so that customers would not leave due to slow loading. With the magento services cost platform, I noticed a real result: the pages have become faster, the interface is smoother, and support helps to quickly resolve any technical issues. I felt like I could focus on business development without being distracted by constant problems.