Running applications and services across several cloud providers and/or data centers can bring many benefits for organizations. Actually, in some cases it can even be a mandatory requirement. Making your application stack compliant with multiple cloud providers can be problematic as there are differences between cloud providers, for example in networking configurations. And to make things even more difficult, you should have a way to secure the intra-services’ communications between many cloud providers. In practice, this means cumbersome network configurations with VPN and other networking security solutions. Luckily, containers and modern (container) overlay networks can solve this complexity for you.