What will it take to achieve great quality of service in the cloud?
You know that a market is about to transition from an early fantasy market when IT architects begin talking about traditional IT requirements. Why do I bring this up as an issue? I had a fascinating conversation yesterday with a leading architect in charge of the cloud strategy for an important company that is typically on the bleeding edge of technology. Naturally, I am not allowed to name the company or the person. But let me just say that individuals and companies like this are the first to grapple with issues such as the need for a registry for web services or the complexity of creating business services that are both reusable and include business best practices. They are the first companies to try out artificial intelligence to see if it could automate complex tasks that require complex reasoning.
These innovators tend to get blank stares from their cohorts in other traditional IT departments who are grappling with mundane issues such as keeping systems running efficiently. Leading edge companies have the luxury to push the bounds of what is possible to do. There is a tremendous amount to be learned from their experiments with technology. In fact, there is often more to be learned from their failures than from their successes because they are pushing the boundary about what is possible with current technology.
So, what did I take away from my conversation? From my colleague’s view, the cloud today is about “how many virtual machines you need, how big they are, and linking those VMs to storage. “ Not a very compelling picture but it is his perception of the reality of the cloud today. His view of the future requirements is quite intriguing.
I took away six key issues that this advanced planner would like to see in the evolution of cloud computing:
One. Automation of placement of assets is critical. Where you actually put capability is critical. For example, there are certain workloads that should never leave the physical data center because of regulatory requirements. If an organization were dealing with huge amounts of data it would not be efficient to place elements of that data on different cloud environments. What about performance issues? What if a task needs to be completed in 10 seconds or what if it needs to be completed in 5 milliseconds? There are many decisions that need to be made based on corporate requirements. Should this decision on placement of workloads be something that is done programmatically? The answer is no. There should be an automated process based on business rules that determines the actual placement of cloud services.
Two. Avoiding concentration of risk. How do you actually place core assets into a hypervisor? If, for example, you have a highly valuable set of services that are critical to decision makers you might want to ensure that they are run within different hypervisors based on automated management processes and rules.
Three. Quality of Service needs a control fabric. If you are a customer of hybrid cloud computing services you might need access to the code that tells you what tasks the tool is actually doing. What does that tool actually touch in the cloud environment? What do the error messages mean and what is the implication? Today many of the cloud services are black boxes; there is no way for the customer to really understand what is happening behind the scenes. If companies are deploying truly hybrid environments that support a mixed workload, this type of access to the workings of the various tools that is monitoring and managing quality of service will be critical. From a quality of service perspective, some applications will require dedicated bandwidth to meet requirements. Other applications will not need any special treatment.
Four. Cloud Service Providers building shared services need an architectural plan to control them as a unit of work. These services will be shared across departments as well as across customers. How do you connect these services? While it might seem simple at the 50,000-foot level, it is actually quite complex because we are talking about linking a set of services together to build a coherent platform. Therefore, as with building any system there is a requirement to model the “system of services”, then deploy that model, and finally to reconcile and tune the results.
Five. Standard APIs protect customers. Should APIs for all cloud services be published and accessible? If companies are to have the freedom to move easily and efficiently between and among cloud services then APIs need to be well understood. For example, a company may be using a vendor’s cloud service and discover a tool that addresses a specific problem. What if that vendor doesn’t support that tool? In essence, the customer is locked out from using this tool. This becomes a problem immediately for innovators. However, it is also an issue for traditional companies that begin to work with cloud computing services and over time realize that they need more service management and more oversight.
Six. Managing containers may be key to the service management of the cloud. A well-designed cloud service has to be service oriented. It needs to be placed in a container without dependencies since customers will use services in different ways. Therefore, each service needs to have a set of parameter driven configurators so that the rules of usage and management are clear. What version of what cloud service should be used under what circumstance? What if the service is designed to execute backup? Can that backup happen across the globe or should it be done in proximity to those data assets? These management issues will become the most important issues for cloud providers in the future.
The best thing about talking to people like this architect is that it begins to make you think about issues that aren’t part of today’s cloud discussions. These are difficult issues to solve. However, many of these issues have been addressed for decades in other iterations of technology architectures. Yes, the cloud is a different delivery and deployment model for computing but it will evolve as many other architectures do. The idea of putting quality of service, service management, configuration and policy rules at the forefront will help to transform cloud computing into a mature and effective platform.