AWS Migration Considerations: The Roadmap

AWS Migration Considerations: Part 4 (8 part series) Posted 19 April 2021

Welcome to the fourth article in our AWS Migration Considerations Series. You can find the start of the series here.

For our AWS customers, we subscribe to the Migration Acceleration Program approach, which defined three phases, and a set of activities.

Modis Australia | AWS Migration Considerations: The Roadmap

These phases take time but serve to bring the rest of the organisation up to the awareness of the responsibility, and skills gaps, that may exist in the wider organisation, to ensure that Migrations do not happen as shadow IT and misalign with other initiatives.

Prioritisations and Waves

some small time for an engineer to understand the application, its dependencies, integrations, dependencies, data model, and more.

Some of the items we review in workloads are:

  • Number of inbound integrations and dependencies from other systems
  • Frequency of these integrations inbound, protocols, and data volumes
  • Number of outbound integrations and dependencies
  • Frequency of these integrations outbound, protocols, and data volumes
  • Number of users publicly (i.e., over the Internet, if any)
  • Number of users internally
  • Size of any data file store to migrate
  • Size and type (Engine) of any database to migrate
  • Licensing requirements

At the same time, we look at things we can optimise and modernise at the same time, checking COTS vendor support and corporate standards:

  • Current app server operating system version, and target operating system version
  • Current database engine and version, and target database engine version
  • Current installed application revision, and latest patch revision
  • Current service endpoint and suitability for placing behind a managed load balancer with an Amazon Certificate Manager-vended TLS certificate
  • Suitability for templating
  • Service backup and restore options once migrated in cloud

A few initial workloads are generally low priority, lightly integrate or standalone systems. Some of these can run active-active from on-cloud, and on premise, whereas others may have to run form a single location at any time.

Modis has been an AWS Consulting Partner since 2013. You can learn more about our AWS Practice and services here.

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