Several companies provide free website hosting services suitable for small businesses that already own a domain. Here are some options you can consider:
InfinityFree: InfinityFree offers free website hosting with unlimited disk space and bandwidth. It supports PHP and MySQL, which are essential for dynamic websites. However, you’ll need to connect your domain using their DNS settings.
AwardSpace: This company provides free hosting services that include 1 GB of disk space and 5 GB of monthly traffic. AwardSpace allows you to connect your own domain and supports PHP and MySQL databases.
x10Hosting: Known for its ease of use, x10Hosting provides a free hosting service with a custom cPanel. It offers unlimited disk space and bandwidth, and though there’s a learning curve, it supports linking your existing domain.
GitHub Pages: While primarily for developers hosting static websites, GitHub Pages allows you to connect a custom domain. It is ideal for straightforward static sites and offers excellent uptime and easy version control through Git.
Netlify: Popular for static site hosting, Netlify provides a free tier that includes continuous deployment from Git repositories and domain management features. It supports custom domains and SSL, making it a secure option.

These options vary in terms of features and ease of use, so you should assess your specific business needs when choosing the best provider. Remember that free hosting often comes with limitations, such as less customer support or lower performance compared to paid services. If your business grows or requires more robust features, you might need to consider upgrading to a paid service in the future for better support and scalability.