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When the Cloud forces enterprises to reinvent their application strategy

The generalisation of the Cloud is established. Global data flows have succeeded application silos. The trend today is towards multi-Cloud and hybrid Cloud strategies. But beyond the expected benefits in terms of cost control, speed of implementation and flexibility, there are now security and performance issues.

The complexity of Cloud-to-Cloud...
Implementing a multi-Cloud strategy allows the company not to be captive of a single supplier, to take advantage of the functional specificities of each Cloud, while increasing its resilience. This gives it greater flexibility, since it can therefore reduce the impact of breakdowns or performance problems.

This type of approach offers companies the opportunity to take advantage of the best services offered by different vendors in the Cloud, to design their applications by going to pick Big Data components at one, Business Intelligence at another, and AI at yet another... From then on, their applications are certainly made up of the "best elements", but totally fragmented.

While it is simple for a company to connect directly to a single cloud provider, it quickly becomes very complex to repeat the operation for several, with global coverage. This complexity is exponential when it is envisaged to connect several Clouds together. Linking a SaaS and an IaaS is like dealing with connectivity, addressing, authentication, etc. issues.

New issues to take into account
For businesses, private cloud connectivity is complementary to Internet access. On the one hand, there is the world of performance and reliability, and on the other, the world of simplicity and public access.

Whatever the deployment vectors of applications in the cloud, cost control and security remain the main challenges facing enterprises.

Applications are now complex aggregates of services, provided by different global providers. In a way, the company is therefore dependent on them when it comes to making its service reliable. The use of public cloud services induces new types of risks: the unavailability of a service in all or part of the Cloud provider's network and the risks inherent in multiple data transports over the Internet.

When you know that a few milliseconds of latency on an application can be very detrimental to an enterprise, just like hacking critical data (CRM, financial...), you understand the importance of thinking carefully about its connectivity strategy in the Cloud.

Critical applications finally in the cloud
It is possible to create encrypted data tunnels via the Internet, but these solutions present operational and technical constraints for high data rates, or for a large number of components to be connected between them. Dedicated and private connectivity significantly reduces the attack surface of these streams and guarantees stable performance. These two criteria allow companies to implement a hybrid cloud strategy with confidence, as they extend their legal and technological constraints on data protection and transport security from end to end.

Today, alternatives to the Internet exist to transfer critical data between the place where it is stored (in the public or private cloud, but also on the company's servers) and the place where it is consumed (within the company itself or with users of its solutions), all in a secure, reliable and auditable manner. This is necessary to facilitate access to these heterogeneous environments, guarantee the performance of applications in the cloud and offer the enterprise great agility, as well as complete visibility of its resources in the cloud.

The point is that the hybrid cloud brings the best of both worlds and not their constraints. The network that connects cloud services is now part of the application ecosystem and must be subject to the same level of demand, flexibility and security.

Jérôme Clauzade

Head of Product at InterCloud

AWS & InterCloud

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