Planning Your Cloud Migration

Planning your migration is by far the most important part of the process because it is here where you decide the type of cloud infrastructure you need. This will be based on several factors, including:

• What needs to be moved?
• Who will be affected?
• Industry-specific security and compliance requirements
• Existing hardware
• Apps and services required
• Network bandwidth required
• Optimum topology
• Redundancy
• Budget

Probably the biggest decision you will make will be whether to migrate fully into one public cloud (AWS, Microsoft Azure, Google Cloud Platform, IBM Cloud, etc.) or create a hybrid deployment from a mixture of public clouds, private clouds, or a combination of the two.

The best plans always include a comprehensive data audit and management strategy. Once you know exactly where every bit and byte of data currently enters and exits your business, you can make watertight plans to shepherd that data into a secure cloud environment.

You will also need to plan out a suitable timeframe for the migration (e.g. not in the middle of your busiest weeks/months) and have a disaster recovery/business continuity plan in place to cover every eventuality.

The Migration Process

Sometimes, cloud migration is thought of as one single process (like birds migrating en masse between hemispheres). But this isn’t Planet Earth on the Discovery Channel, people. It’s more appropriate to treat cloud migration as a stage-by-stage process, with some business functions migrating earlier than others. And, some workloads may not even be suitable for cloud migration at all.

Start your migration process by moving whichever functions are most the 'cloud-ready’ first. They should contain minimal sensitive data, be relatively easy to move into a cloud environment and provide measurable efficiency savings. This will give you and your stakeholders some early successes to build upon and also motivate you to complete your move. During the early phase of app migration, focus heavily on obtaining feedback, as this will help you to best manage more mission-critical migrations.

A popular first choice for cloud migration is analytics, as no applications require movement, yet the results are immediately appreciable because many businesses currently struggle to make sense of the vast amounts of data they are collecting in their on-premise data warehouse. Once the analytics migration is complete, you can then start training your analysts and data scientists on how to access and utilize the data.

Piecemeal migration will also help you to align internal processes and staff training while helping everybody feel more comfortable with the changes ahead.

Important note: If your plan is to migrate fully into one of the big public clouds, there are direct connect services (AWS Direct Connect, Azure Express Route, Google Cloud Interconnect) which will streamline the entire migration process for you.

Optimizing the Cloud

Once your workloads are in the cloud, there is a lot of fine-tuning you can do to optimize performance and increase the agility and efficiency of your deployment. In other words, this is the part where you can configure your cloud services to more accurately address your needs.

‘Orchestration management’ is a key phrase which you should become familiar with, if you aren’t already. This is the process by which you can manage your VMs to avoid resource wastage and take advantage of any opportunities to increase efficiency.

Orchestration allows your DevOps teams to automate the creation of instances using pre-built templates, speeding up the creation and testing of apps and ensuring resources are fully decommissioned when not needed.

For predictable workloads using public cloud architecture, you will almost certainly want to take advantage of Reserved Instances (RIs), as these can substantially cut your operating costs. AWS, Azure and IBM Cloud offer RIs, while Google Cloud Platform terms its equivalent a “Committed Use Discount.”

Securing Your Assets

Security should always be an ongoing priority, but even more so now under the strict new data protection legislation, which imposes severe penalties on non-compliant business.

Good news is, all of the big public cloud providers are already very secure and offer a wide range of security services which can be deployed and configured to fulfill your compliance requirements. They also provide white papers and other information to help guide you.

The ultimate responsibility of security remains with you, however, so it is of paramount importance that you have adequate threat detection and response services, as well as the ability to prevent or mitigate DDoS attacks.

Alongside security, your cloud architecture will also need to be able to respond quickly to instance failures. Although redundancy is built into the software and applications themselves, these still have to be configured and optimized to recognize performance issues and respond appropriately.