Containerization and modern cloud infrastructure have made it possible to deploy even the most complex applications without making big initial investments. With most cloud computing models, you pay fixed fees only for the resources you use, and you are all set. Scaling up (and down) becomes easier too since you are not actually investing in the physical hardware supporting the cloud cluster.
While the available services certainly make cloud computing more accessible, they still could cost a lot, especially when the cost of using cloud resources is not managed properly. It is easy to fall into the trap of buying into more resources that are not fully utilized and ending up paying more than you should.