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Optimizing Cloud Migration: Performance Lessons for the Enterprise

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Flawed Thinking: Moving to the Cloud Means You Don't Need an Ops Team A common misconception is that a move to the cloud can be accompanied by a reduction in the levels of ops support that is needed for production systems. This is completely untrue. Cloud- based systems need as much in-house expertise as any other hosted systems. Instead, it's the nature of the job that is changing. Manag‐ ing a cloud-based system is as complex as managing an on-premise system. It requires a high level of specialized knowledge and under‐ standing of the implementation, as well as industry knowledge in both traditional networking and cloud systems. Cloud systems do not look after themselves, but they do provide a new paradigm in how to build, monitor, and maintain these systems. This requires as much expertise and management as on-premise systems. Because little pre-emptive optimization of the core infrastructure can be done, the focus becomes more on building fault tolerance into systems, building comprehensive monitoring solutions, and the ability to react quickly to situations to take advantage of the scaling and geographical options offered by cloud-based services. The skill‐ sets of your ops team will need to evolve to meet these new chal‐ lenges. Flawed Thinking: Third Parties are Optimized for You Modern systems are not only dealing with incoming systems, but they are also routing requests out to other remote systems, often over the public Internet. This could be to third-party services or other services within the organization. When assessing the Internet performance of systems after migration to the cloud, it is essential that you also consider the performance of communications with these dependencies. Key Concept—Direct Connections Are Available Although the default nature of cloud providers is to communicate over the public Internet, many of them offer the option to intro‐ duce a direct point-to-point connection into their infrastructure from an external point, typically your back office or other data cen‐ Flawed Thinking: Moving to the Cloud Means You Don't Need an Ops Team | 23

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