Hybrid cloud, in the formal sense, has not proven to be how the early iterations have gone. The reality is that multi-cloud implementations have become a widely adopted methodology, but not without challenges. Public cloud integration with on-premises deployments was thought to be for migrating active workloads between the environments. What has become more popular is embracing the two pronged approach.
Gartner coined the phrase bimodal IT to describe it. Mode 1 applications are the traditional legacy workloads that tend to be monolithic, bound by data locality, and for many reasons, required to stay on-premises. Mode 2 applications are what we know as the cloud-native, next generation applications. Mode 2 tend to involve a microservices approach, are designed for horizontal scaling, and embrace the concepts of immutable infrastructure.
source: Gartner presentation by Lydia Leong (ENT312) Should You Build or Buy Cloud Infrastructure and Platforms? …
There are a few initial challenges around migrating workloads even outside of the separation of Mode 1 and Mode 2:
- Common abstractions not available between hypervisors
- Many VPN implementations added security challenges, cost, and complexity
- Sticker shock as cloud adoption rises, along with operational costs
As you look towards embracing a hybrid approach using, it requires a new way of thinking about consuming IT resources. This is about finding where we land in the bimodal world, and it means that we have to evaluate which application environments belong in which platform. Decisions being made will have a downstream effect which is cost.
Costs come in two forms. We have the real operational cost of public cloud usage. We also have the cost in the form of application performance which is measured by latency and the effects on the applications. Even more challenging is finding the desired state where we are able to satisfy the application demand while maintaining the most affordable spend on public cloud resources.
What's your strategy?
There are a lot of questions we face, and many organizations will embrace different strategies. We would love to hear about your thoughts as you plan the next 6-18 months of your IT strategy:
- How do you plan to add public cloud to your IT portfolio?
- Do you use public cloud already today?
- Will you increase your consumption of public cloud?
- What are you doing today to make decisions around where your applications should be running?