1-) You will be able to keep your site up-to-date thanks to the website design, which is suitable for your corporate identity or includes the features you have mentioned, from content entries to design, with turnkey management panel.
2-) I am making an e-commerce site with credit card and bank transfer options, ready for sale with a custom design, unlimited product and content entry will then have a customizable structure. After the site delivery, I explain the admin panel in detail.
3-) I design single page web sites, that is, the homepage has sections such as communication about us on a single page, it can be added to the contact form and map, depending on the request.