WordPress.com is a blog and website hosting service run by Automattic. It is created by Matt Mullenweg, the co-founder of WordPress open source software, hence the name WordPress.com.
WordPress.com is a website hosting service. Built on top of the same WordPress software but with a totally custom user experience. You don’t have to worry about the software and backups as WordPress.com takes care of it.
Their free and paid plans have different set of features. All plans allow users to choose from hundreds of free and paid WordPress themes. You can then use the built-in customizer to add your site title, use widgets, add navigation menus, and so on.
You cannot install custom plugins or themes unless you upgrade to their business plan.
Premium and lower plans do not have eCommerce features or third-party ad network support. With the business plan, you can use WooCommerce and third-party ad networks. However, you will still have to follow WordPress.com’s terms and conditions.
The basic plan is free, but is extremely limited. Their personal plan starts with $4 per month billed annually and includes a custom domain. Premium plan costs $8.25 per month billed annually and it gives you the ability to monetize your site and advanced design customization. Business plan costs $24.92 per month billed annually, and it gives you the ability to have Ecommerce and custom plugins.