That depends on the size of your site, how much traffic it gets and what kind of technical requirements you have. Shared hosting is good for small sites, but if the site is getting more traffic, you need a VPS or a dedicated server.

Yes, upgrading a plan is quick and hassle-free.

Yes, there's support with each plan, although response times can vary depending on which package you choose.

Both choices are there; however, annual plans typically come with a better discount.

Yes, there is some fundamental security, such as firewalls along with SSL support, available on all plans.

Shared hosting refers to a situation in which several websites are hosted on the same physical server.

Yes, it’s the cheapest option for beginners and low-traffic websites.

It can, if a high resource load is requested from many sites. This risk is mitigated when you choose good service providers.

Yes. WordPress and most other CMS can be used in shared hosting.

Yes, it is, but since resources are shared, you need dedicated firewalls and monitoring.

Business hosting has more power, speed and additional resources, whereas in shared hosting the resources are shared among many different sites.

Yes, it is a good option. As online stores require additional CPU, RAM and security.