Welcome!

Blog Feed Post

IaaS or PaaS – Migrating Legacy Microsoft Applications to Azure ‘Business as a Platform’

http://cloudbestpractices.net/wp-content/uploads/2017/11/pizza-aas-375x3... 375w, http://cloudbestpractices.net/wp-content/uploads/2017/11/pizza-aas.jpg 400w" sizes="(max-width: 300px) 100vw, 300px" />Cloud Solution Design

In their white paper Microsoft IT transitions core business applications to Microsoft Azure PaaS1, Microsoft explores the dynamics that can be considered when determining whether IaaS, PaaS or SaaS is the right option for your Cloud Migration project, through detailing a number of their own migration case studies.

This decision process is central to Cloud Solution Design.

PaaS-Enabled Innovation

The goal of the project was to modernize a number of LOB (Line of Business) applications, such as BCWeb (Business Case Web), a web-based application used to create business cases for exemptions to product pricing, as well as other key internal apps for employee functions.

The decision to opt for PaaS was for two main reasons:

  • PaaS handles low level maintenance functions such as patching, that didn’t add any value to the goals of this project.
  • As the LOB applications were of critical importance to Microsoft sales activities requiring ongoing customization to business needs, they wanted more direct developer control than SaaS enables.

Sharepoint to Azure Transformation

BCWeb was originally developed as a Sharepoint application, highlighting another decision possibility for migrating legacy apps to the Cloud, in that a ‘lift and shift’ option is possible, through migrating on-premise Sharepoint to Azure-based Sharepoint hosting, or even to Office 365.

In the case of this project they moved away from Sharepoint and re-built a new application based on PaaS, describing the mapping of Sharepoint functions to their modernized equivalent on Azure:

  • Web-based user interfaces mapped directly to Azure web roles.
  • WCF (Windows Communication Foundation) Services and background processes were split into two worker roles (Web and worker roles explained by TechTarget).
  • SQL Server database mapped to Azure SQL Database.

This approach delivered business benefits including:

  • Increased performance and stability – Traffic loads for the prior Sharepoint-based system had exceeded what the infrastructure could handle, and it became unstable and went offline during peak usage times at month ends, and attempts to alleviate the issue such as load balancers and architecture improvements failed to remedy the situation. Moving to Azure applied Cloud-scale capacities that eliminated the issue.
  • Cost savings / avoidance – Eliminated the requirement to procure and maintain servers.
  • Best practices and reusable components – The team developed practices and components to support the migration that other Azure projects could benefit from.

Agility

An example of the benefits of growing best practices is the second of the application case studies.

The ‘Connect’ application was used for employee performance reviews and ran on a large web cluster that sat idle for much of the year, because of the infrequent schedule of conducting the reviews. Not only were they able to also migrate this app to an elastic Cloud supply that easily scales to service more than 120,000 employees and eliminate the servers, but the new app was built from scratch in only four months.

Secure, Real-time Architecture

The third case study for the ‘Paystub’ application highlights the serious issues that some poorly architected legacy applications can cause. In this case it pulled and maintained a local copy of personal data, presenting privacy and security risks and requiring batch job synchronization, causing data latency problems.

Furthermore the business logic was programmed directly into the user interface, so even the smallest of business workflow-level changes required source code reengineering and distribution. The application also required a dedicated server cluster.

So again migrating to Azure eliminated these hardware costs, but more importantly enabled architecture modernization that also eliminated the more severe issues caused by the poor design model, making possible a single data source, real-time approach.

Delivering Business Value

The ‘Returns Service’ was how Microsoft customers would arrange for the return of products via the online and retail stores. It was painful for customers because it was manual, slow and sometimes introduced errors such as assigning refund credit incorrectly. Customers had to wait 24 hours to receive a shipping label.

Therefore in this case migrating the app to Azure delivered customer value. Integrating with the online store it enabled self-service submitting of return requests, eliminating the delays and errors and greatly improving the customer experience.

Mobile Enterprise

In another paper Creating a user-centric mobile hub with Xamarin and Azure App Service2 Microsoft further describes how Azure can power mobile-enabled applications.

The team developed ‘EmpEx’, a mobile app that brings together various employee experiences, such as booking a shuttle to travel to various office buildings, ordering online from the nearest building café, and even viewing a summary of their benefits information, with goals of:

  • Providing snack-size experiences for everyday things employees care about.
  • Empowering employees to work from anywhere.
  • Orienting employee experiences to their context.
  • Carrying interactions across places, time, and people.

A key feature of this project was the use of Xamarin, whch enabled the development of a single code base deployed to multiple different mobile devices – Windows 10 Mobile, iOS, and Android devices without building and managing three distinct apps. HockeyApp was used to distribute the apps, to easily publish new builds of EmpEx and make it available for employees to install, integrating with Visual Studio Team Services (VSTS) and logging telemetry, crash reports, and deployment release (flighting) information.

Conclusion: Business PaaS-Enabled Consolidation

Although Cloud migration scenarios tend to focus on a single, big ticket application, the reality is that large enterprise organizations also feature a ‘long tail’ of thousands of small applications, those built using tools such as Sharepoint through Excel spreadsheets, and also there are still manual processes. While they are built via much lower standards of IT architecture they can still be important to customers and make use of sensitive data, and incur relatively high costs as they require their own dedicated hardware.

Migrating all of these to a PaaS not only eliminates multiple instances of excessive hardware installs it enables a powerful framework for consolidating a portfolio of applications sharing common functionality, both at the technology and business logic layers.

For example rather than duplicating identity authentication procedures each of the apps uses the Active Directory Authentication Library (ADAL) to communicate with AAD to authenticate users and securely call web APIs by using OAuth 2.0 across all platforms via the Azure App APIs.

Furthermore Microsoft built another services layer atop this again, what could be considered a ‘Business PaaS’, in that it facilitates the same common components but for business components, in addition to the technical ones. Called the EDM for Employee Data Management it’s built around the complete ‘Hire to Retire’ lifecycle of employee management, providing a common platform that facilitates multiple required applications, and makes use of common components such as MS Approvals.

This ‘Business as a Platform’ approach yields multiple benefits:

  • Widespread upgrade of the ‘long tail’ of small business applications that harbour a myriad of expensive, inefficient and non-compliant IT solutions.
  • Modernization of these tools via very rapid application development methods. For example adding a new EDM application is as simple as creating an Azure web site.

References

1.
Microsoft IT transitions core business applications to Microsoft Azure PaaS. Microsoft IT Showcase. https://www.microsoft.com/itshowcase/Article/Content/608/Microsoft-IT-transitions-core-business-applications-to-Microsoft-Azure-PaaS. Accessed September 7, 2017.
2.
Creating a user-centric mobile hub with Xamarin and Azure App Service. Microsoft IT Showcase. https://www.microsoft.com/itshowcase/Article/Content/892/Creating-a-usercentric-mobile-hub-with-Xamarin-and-Azure-App-Service. Accessed September 14, 2017.

The post IaaS or PaaS – Migrating Legacy Microsoft Applications to Azure ‘Business as a Platform’ appeared first on CBPN.

Read the original blog entry...

More Stories By Cloud Best Practices Network

The Cloud Best Practices Network is an expert community of leading Cloud pioneers. Follow our best practice blogs at http://CloudBestPractices.net

Latest Stories
"Space Monkey by Vivent Smart Home is a product that is a distributed cloud-based edge storage network. Vivent Smart Home, our parent company, is a smart home provider that places a lot of hard drives across homes in North America," explained JT Olds, Director of Engineering, and Brandon Crowfeather, Product Manager, at Vivint Smart Home, in this SYS-CON.tv interview at @ThingsExpo, held Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA.
SYS-CON Events announced today that Conference Guru has been named “Media Sponsor” of the 22nd International Cloud Expo, which will take place on June 5-7, 2018, at the Javits Center in New York, NY. A valuable conference experience generates new contacts, sales leads, potential strategic partners and potential investors; helps gather competitive intelligence and even provides inspiration for new products and services. Conference Guru works with conference organizers to pass great deals to gre...
DevOps is under attack because developers don’t want to mess with infrastructure. They will happily own their code into production, but want to use platforms instead of raw automation. That’s changing the landscape that we understand as DevOps with both architecture concepts (CloudNative) and process redefinition (SRE). Rob Hirschfeld’s recent work in Kubernetes operations has led to the conclusion that containers and related platforms have changed the way we should be thinking about DevOps and...
The Internet of Things will challenge the status quo of how IT and development organizations operate. Or will it? Certainly the fog layer of IoT requires special insights about data ontology, security and transactional integrity. But the developmental challenges are the same: People, Process and Platform. In his session at @ThingsExpo, Craig Sproule, CEO of Metavine, demonstrated how to move beyond today's coding paradigm and shared the must-have mindsets for removing complexity from the develop...
In his Opening Keynote at 21st Cloud Expo, John Considine, General Manager of IBM Cloud Infrastructure, led attendees through the exciting evolution of the cloud. He looked at this major disruption from the perspective of technology, business models, and what this means for enterprises of all sizes. John Considine is General Manager of Cloud Infrastructure Services at IBM. In that role he is responsible for leading IBM’s public cloud infrastructure including strategy, development, and offering m...
The next XaaS is CICDaaS. Why? Because CICD saves developers a huge amount of time. CD is an especially great option for projects that require multiple and frequent contributions to be integrated. But… securing CICD best practices is an emerging, essential, yet little understood practice for DevOps teams and their Cloud Service Providers. The only way to get CICD to work in a highly secure environment takes collaboration, patience and persistence. Building CICD in the cloud requires rigorous ar...
Companies are harnessing data in ways we once associated with science fiction. Analysts have access to a plethora of visualization and reporting tools, but considering the vast amount of data businesses collect and limitations of CPUs, end users are forced to design their structures and systems with limitations. Until now. As the cloud toolkit to analyze data has evolved, GPUs have stepped in to massively parallel SQL, visualization and machine learning.
"Evatronix provides design services to companies that need to integrate the IoT technology in their products but they don't necessarily have the expertise, knowledge and design team to do so," explained Adam Morawiec, VP of Business Development at Evatronix, in this SYS-CON.tv interview at @ThingsExpo, held Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA.
To get the most out of their data, successful companies are not focusing on queries and data lakes, they are actively integrating analytics into their operations with a data-first application development approach. Real-time adjustments to improve revenues, reduce costs, or mitigate risk rely on applications that minimize latency on a variety of data sources. In his session at @BigDataExpo, Jack Norris, Senior Vice President, Data and Applications at MapR Technologies, reviewed best practices to ...
Widespread fragmentation is stalling the growth of the IIoT and making it difficult for partners to work together. The number of software platforms, apps, hardware and connectivity standards is creating paralysis among businesses that are afraid of being locked into a solution. EdgeX Foundry is unifying the community around a common IoT edge framework and an ecosystem of interoperable components.
"ZeroStack is a startup in Silicon Valley. We're solving a very interesting problem around bringing public cloud convenience with private cloud control for enterprises and mid-size companies," explained Kamesh Pemmaraju, VP of Product Management at ZeroStack, in this SYS-CON.tv interview at 21st Cloud Expo, held Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA.
Large industrial manufacturing organizations are adopting the agile principles of cloud software companies. The industrial manufacturing development process has not scaled over time. Now that design CAD teams are geographically distributed, centralizing their work is key. With large multi-gigabyte projects, outdated tools have stifled industrial team agility, time-to-market milestones, and impacted P&L stakeholders.
"Akvelon is a software development company and we also provide consultancy services to folks who are looking to scale or accelerate their engineering roadmaps," explained Jeremiah Mothersell, Marketing Manager at Akvelon, in this SYS-CON.tv interview at 21st Cloud Expo, held Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA.
Enterprises are adopting Kubernetes to accelerate the development and the delivery of cloud-native applications. However, sharing a Kubernetes cluster between members of the same team can be challenging. And, sharing clusters across multiple teams is even harder. Kubernetes offers several constructs to help implement segmentation and isolation. However, these primitives can be complex to understand and apply. As a result, it’s becoming common for enterprises to end up with several clusters. Thi...
"Infoblox does DNS, DHCP and IP address management for not only enterprise networks but cloud networks as well. Customers are looking for a single platform that can extend not only in their private enterprise environment but private cloud, public cloud, tracking all the IP space and everything that is going on in that environment," explained Steve Salo, Principal Systems Engineer at Infoblox, in this SYS-CON.tv interview at 21st Cloud Expo, held Oct 31 – Nov 2, 2017, at the Santa Clara Conventio...