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Optimizing Cloud Migration: Performance Lessons for the Enterprise

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ter. In essence, this is a leased-line connection into your cloud envi‐ ronment. This has several advantages over traversing the public Internet: • More consistent network connection • Reduced bandwidth costs • Increased security Phase 3: Dos and Don'ts Do • Assume that components could fail at any point—this includes network connectivity • Have contingency plans in place to deal with networking issues • Consider costs when building any solution • Build a system that can scale, not one that is already scaled • Understand your users when planning where and how to scale your system • Aim to build a system that is always operating close to capacity • Realize that cloud systems require specialist knowledge to man‐ age them • Realize that the nature of the work will change • Ensure that you understand the impact of poor performance of third-party systems • Remember to assess the performance of dependent applications • Consider installing dedicated connections to external systems Don't • Feel that any failover process has to be a complex automated process—a tested and documented manual process can be equally valid • Assume that after moving to the cloud the ops overhead will be reduced • Try to build a system that is sized to be future proof 24 | Phase 3: Enhancing Your Cloud Solution

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