Load balancing distributes workload across multiple servers or resources, often to improve responsiveness and availability of applications or websites. This solution is appropriate when there is a need to manage dynamic, uneven loads, and provide redundancy in case one of the servers fails. Clustering, on the other hand, is often used for increasing the availability of services by linking multiple servers so that they behave like a single entity, but it's not primarily responsible for distributing workloads to manage variable traffic levels. Serverless computing abstracts the server layer completely and automatically scales to handle load, but for a web hosting company looking for balanced distribution across their own servers, load balancing is more appropriate. Containerization enables applications to run in isolated user spaces called containers, but it does not directly relate to distributing a workload.