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Thursday, 4 June 2020

Legacy Applications Modernization


Application modernization is the process  modernizing legacy applications platform infrastructure, internal architecture, and/or features. Application modernization is focused on monolithic, on-premises applications typically updated and maintained using waterfall development processes and how those applications can be brought into cloud architecture and release patterns, namely Microservices & DevOps.




Alignment of IT systems to an organization’s business goals is much needed to stay ahead of the competition. If the IT systems were built a long time back, they would be inflexible and difficult to use, due to their limited abilities, for today’s business needs. Legacy systems impact an organization’s ability to take new tasks and require huge investments and costs to maintain than the profitability that they generate. More than 75% of IT spend is consumed in enhancing the legacy systems.

In 2019, the US Federal government spent 80 percent of the IT budget on Operations and Maintenance. This spending mainly included aging legacy systems, which posed efficiency, cyber security, and mission risk issues. Only 20 percent of the IT funding was assigned to Development, Modernization, and Enhancement.

Challenges With Legacy Systems:

Modernize Your Applications, Drive Growth and Reduce TCO (Total Cost Of Ownership)
  • Drive growth, retire legacy investments and improve financial posture.
  • Accelerate migration to the cloud with a trusted provider.
  • Maximize the value of existing investments.
Benefits Of Modernization


Modernization Considerations:
Rehost:

             Rehosting is also referred to as a “lift-and shift” migration. In essence, the application is moved into the infrastructure as a service (IaaS) environment of a cloud provider while avoiding as many modifications to the system as possible.

Refactor:

            Refactoring, often referred to as “repackage”, is to minimally alter application code or configuration changes necessary to connect the application to a provider’s PaaS (Platform as a Service) and take better advantage of cloud. 

Rearchitect:

            Rearchitecting is to modify or extend the existing application’s code base to optimize it for a cloud platform and for better scalability. For example: you can decompose a monolithic application into microservices that work together and readily scale.

Rebuild:

            Redevelop the application from scratch on a provider’s PaaS platform. With rebuilding, you completely build your application to make it cloud-ready. Although rebuilding requires losing the familiarity of existing code and frameworks, the advantage is that you gain access to innovative features in the provider’s PaaS platform.

Replace:

            With replacing, you move your existing application directly to a software as a service (SaaS) offering. With this approach, you can avoid mobilizing a development team when requirements for a business function change quickly.


Start modernizing you application with best technique suites for you.

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