Vendor lock-in is a situation where a customer becomes dependent on a single cloud service provider (CSP) and cannot easily switch to another vendor without substantial cost, technical incompatibility, or legal constraints. Vendor lock-in is a risk that is most likely to be accepted as a result of transferring business to a single CSP, because it may offer some benefits such as lower prices, higher performance, or better integration. However, vendor lock-in also has some drawbacks, such as reduced flexibility, increased dependency, and limited innovation. Therefore, customers should carefully weigh the pros and cons of vendor lock-in before choosing a CSP and try to avoid or mitigate it by using open standards, multi-cloud strategies, or contractual agreements.