Big bang migrations rare

Incremental migration

Hybrid-cloud solutions

For examples:

• Legacy application with old database to a modern, secure cloud data store
• Obsolete application architecture to modernize by migrating to cloud-based microservices
• Mobile app to deploy alongside a traditional application

Significant change drives cloud adoption

If one migration successful: continue with others that may have for each an individual pipeline, pool of users, stakeholders, databases, workflows, automations, business logic and reporting systems

Cloud migration can take years

In-house data centers still operate

Plan migration early

Prove concept

Execute migration plan

Ongoing onboarding

Develop security

Abstration has benefits and disbenefits

Understand share responsibility model:

• CSP secures cloud
• Customer secures applications

Consider security in:

• Planning
• Execution

Lack of migration planning leads to individual migrations

Decentralized infrastructure

Inefficiencies

Reduced velocity

Go back to ITIL 4 Acquiring Managing Cloud Services Certification Course: Onboard to finish this chapter or to the main page ITIL 4 Acquiring Managing Cloud Services Certification Course.