1 Cloud Computing as a Source of Innovation for Global Software Engineering M. Ali Babar The University of Adelaide, Australia April 3, 2014.
2 Background Brief M. Ali Babar Professor of Software Engineering PhD in CSE, University of New South Wales Work History: Reader - Lancaster University: Feb Nov Associate Professor ITU, CPH: Dec Lero, Ireland: NICTA, Australia: JRCASE, Macquarie University: Various industrial roles in IT: Prior to 2001 Research in software architecture, Service Orientation, Cloud Computing, and Software Development Paradigm
3 Talk s Goals Getting familiar with emerging technological and development paradigms Reflect about the areas of software engineering research motivated by cloud computing. Learn about some of the key challenges of developing software with distributed teams. Understand how cloud computing can be leveraged for global software engineering.
4 Overview Cloud computing & research issues. Global software engineering & challenges. Leveraging cloud computing for GSE. Tool as a Service (TaaS) for GSE.
5 What is Cloud Computing? Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable computing resources (e.g., networks, servers, storage, applications, and services) that can be rapidly provisioned and released with minimal management effort or service provider interaction. (A definition by the US National institute of standards and technology (NIST)) Some of the characteristics Distributed computing at a massive scale. On demand elasticity. Exploiting existing technologies (Grid, Utility, Virtualization). Pay per use model. Driven by economies of scale.
6 Market Forecast Market study on worldwide public IT cloud services by category Market study on worldwide IT spending by consumption model
7 Some Examples The New York Times made its archives free by providing 11 million articles as PDF the job was done under 24 hours at a cost of US$240 using Hadoop on Amazon Web Service Danish Rail cancellation information services used Microsoft Azhure for less than US$25 Animoto handled flood of nearly 750,000 new sign ups in three days using Amazon s cloud, which cost them about 10 cents a server per hour - the required scalability fluctuated from 50 servers to over 3500
8 Economic Aspects Cost reduction Reducing the cost for infrastructure acquisition and maintenance Improved time to market Imperative for SMEs. Larger enterprises can publish new capabilities with little overhead to remain competitive. Return on investment Essential but not guaranteed Turning CAPEX into OPEX from capital cost to operation cost model Going Green Reducing the energy consumption of unused resources
9 Potential Advantages Faster time to market and improved productivity Lower cost in terms of licensing fee No installation and maintenance Fast upgrades of new features and patches Application developed using mature processes Innovation without supportive applications
10 Potential Disadvantages Maturity in designing multi-tenant applications Cultural change in software development companies From licensing model to subscription business model Not for all applications, e.g., online share trading Vendor dependency is quite common Migration can be quite problematic
11 Some of the Challenges!!! Security Would my data be more secure with Cloud provider? Interoperability Significant risk of vendor lock-in standardized interfaces not available, incompatible programming models Reliability Use of commodity hardware, prone to failure...cloud 2.0 Laws and regulations Privacy, security, and location of data storage Organizational changes Changing authorities of IT departments, compliance policies Cost Purchase vs. lease, migration cost, models to design capital and operational budgets, cost of cloud providers
12 Is Cloud Computing for Me? For end users Cost reduction: From capital investment to operational expense (pay per use) Ease of use via standardized mechanisms, e.g. Browser Flexibility and short time-to-result Services providers Reduction of the entrance barrier Reduction of time to market Private Cloud Maximize the utilisation of computing resources Minimize operational costs and the organisation keeps full control of its data centres
13 Storage as a Service A third party rents space on their storage infrastructure Specialized cloud storage providers Google Docs are stored on Google s data server Web mail provider Gmail, Hotmail, Yahoo! Flicker and Picasa YouTube, Facebook, MySpace Reliability Unreliability can become a liability Security Encryption Authentication processes Authorization practices
14 Some Common Cloud Based Tools
15 Google Docs!!! Provides documents, spreadsheets and presentations Support sharing and real time collaboration Provide access from anywhere over the Internet Export to formats like DOC, XLS, CSV, ODS, ODT, PDF, RTF, and HTML.
16 Office 365 Microsoft office collaboration and productivity tools Support access through multiple devices via browser Global-redundancy for scalability & availability. Per-user per-month subscription plan with predictable annual cost. Through administrative user interface, IT staff can set up new user accounts, control access to features and see the status of all office 365 services and tools Source:
17 Office Web Applications View, edit and share contents in the Word, Excel, PowerPoint and OneNote. Common set of online viewing and editing tools. Support to access online documents with respective desktop application for rich editing. Simultaneous editing of shared Excel spreadsheets and OneNote Shared Notebooks. Source:
18 Github Social Coding Distributed version control system for collaboration Collaboration Manages teams within organizations and shared administration. Git powered Wikis Integrated issue tracking Code reviews Source: https://github.com/
19 A Snapshot of Potential Areas of Interest Reproduced from Figure 1 of The Future of Cloud Computing: Opportunities for European Cloud Computing beyond 2010.
20 Service and Deployment Models Software as a Service (SaaS) Google Apps Zoho Salesforce CRM Public Clouds! Google App Engine Platform as a Service (PaaS) Microsoft Azure Force.com Infrastructure as a Service (IaaS) Amazon EC2 Eucalyptus IBM Computing On Demand (DoC) Private Clouds! Community Clouds! Hybrid Clouds! Microsoft Cloud Services Yahoo Open Strategy VMWare vsphere Virtual Private Clouds! Service Models Deployment Models
21 Stakeholders Involved & their Perspectives Use APIs offered by Cloud providers to exploit their resources and deliver highvalue services for end-users. Source: EC The Cloud extends the general internet-based service provisioning model with aspects of high availability, reduced cost (through improved resource usage) and ease-of-use. Dynamic management of hosted services (*aas) to guarantee availability, reliability and related quality aspects through automation in order to optimise the overall resource utilisation. Source: EASI-Cloud Review Presenation
22 Global Software Engineering
23 Many Meanings & Forms of GSE Open Source Software Development Offshore Outsourcing Inner Source Software Development Offshore Development Centers Near-Shore Outsourcing Global Software Development Distributed Software Development
24 Types of GSE Arrangements One Vendor Many Vendors One Client Simple Multi-Vendors Many Clients Co-Sourcing Complex Source: Gallivan and Oh, 1999
25 Scenarios of Tool Support Challenges
26 Tools for Distributed Architecting Process Main activities of software architecture process Architectural Analysis Architectural Synthesis Architectural Evaluation Architectural Realization Architectural Evolution Types of tools required Architectural knowledge repositories Decision support systems Architecture modeling tools Web 3.0 technologies
27 Tool Support for GSE Integration provided at the application level
28 Leveraging Cloud Computing for GSE
29 Why Cloud Computing Matters for GSE? Software testing Stress testing with cloud-based infrastructure. Enabling testing of application for sensitive data by offshore testers. Collaborative environments in Clouds Just-in-Time (JIT) tool composition. Processes, tools, & context aligned. Source:
30 NexGen Infrastructure for GSE Context Providing supportive technologies to GSE teams. Challenges Dozens of different tools required. Some commercial tools (IBM SameTime and MS Communicator) available but across vendor integration is problematic and the tools are expensive. No Just In Time (JIT) composition and use of services. Misalignment between tools, processes, and culture. Proposed solution Cloud-based infrastructure for supporting GSE through Tool as a Service (TaaS).
31 Advantages of TaaS for GSE 1/3 On demand tools acquisition & access to a wide range of tools. Processes and tools alignment acquiring tools for process requirements of each project.
32 Advantages of TaaS for GSE 2/3 Artifacts traceability across multiple sites. Implicit support for realtime awareness and collaboration.
33 Advantages of TaaS for GSE 3/3 Access to sensitive and massive amount of data without data movement. Easy access to expensive and sensitive technologies.
34 A Coherent Picture of TaaS Benefits!
35 Consider Some Scenarios 1/2 An Asian organization X is working on two GSD projects for French clients. Project A will be developed using open source technologies and requires access to private data and other services during unit and integration testing in different releases. This project requires access to security and privacy sensitive data and services. French data security and privacy laws restrict the transfer of such data outside of France. If the data and services cannot be made available to organization X, complete development cannot be carried out on their premises in Asia and requires development of artifacts dealing with sensitive data and services inside France.
36 Consider Some Scenarios 2/2 Project B needs access to the real-time data about the traffic flows on French roads and expensive and proprietary platforms for simulation of the traffic flow patterns on road networks. The organization may also need to shuffle developers within projects depending on the workload and criticality of the release. Configuration of development environments requires significant effort during resource shuffling.
37 How Would a Potential Solution Look Like?
38 Some of the Commercial Tools for GSE AgileZen LucidChart Tool MeetingSphere Microsoft Live Meeting Microsoft Project Microsoft Team Foundation Server Pidoco IBM Rational Suite Cloud9 IDE Eclipse Orion exo Platform Description Collaborative project management. Tool to create flowcharts, organizational charts, UML designs, mind maps etc. Group meeting and decision support system. Web conference service. Project management solution. Source control, data collection/reporting and project tracking Software to design GUIs for web and mobile apps and make it live to share with other users. Suite of tools for different phases of software development life cycle. Cloud-enabled Online IDE. Cloud-enabled IDE that can be hosted on private/public clouds. Collaboration Platform and IDE.
39 Summary Remarks!!! Cloud Computing matters need to quickly learn how to exploit the promised benefits and address the challenges Cloud computing stimulates new research directions for new and novel ways of developing software & services GSE is increasingly becoming popular for many good reasons technological and socio-technical innovation are required Cloud computing presents huge potential for ICT innovation including GSE paradigm
40 Acknowledgements Several colleagues and PhD students have hugely contributed to the work on GSE. A number of academic and industrial colleagues have contributed to the research problems and solutions incorporated in this presentation. TaaS work is being performed with Aufeef Chauhan through his PhD research. Tools review work has been performed with Paolo Tell for his PhD research. Socio-technical challenges and solution stratgies work has been performed with Mansooreh Zahedi for her PhD research.
41 References 1/2 M. Ali Babar and M.A. Chauhan, A tale of migration to cloud computing for sharing experiences and observations, Proceedings of the 2nd International Workshop on Software Engineering for Cloud Computing (SECLOUD), M.A. Chauhan, M. Ali Babar, Migrating Service-Oriented System to Cloud Computing: An Experience Report, IEEE International Conference on Cloud Computing (CLOUD), M.A. Chauhan, M. Ali Babar, Towards Process Support for Migrating Applications to Cloud Computing, International Conference on Cloud and Service Computing (CSC), M. A. Chauhan and M. Ali Babar, Cloud infrastructure for providing tools as a service: quality attributes and potential solutions, Proceedings of the WICSA/ECSA 2012 Companion Volume (WICSA/ECSA '12). P. Tell and M. Ali Babar, A Systematic Mapping Study of Tools for Distributed Software Development Teams, TR , 2012.
42 References 2/2 Y. Bard, G. Caplat, Software-as-a-Service and Versionology: Towards Innovative Service Differentiation, 24th IEEE International Conference on Advanced Information Networking and Applications (AINA), I. Brandic, et al., Service mediation and negotiation bootstrapping as first achievements towards self-adaptable grid and cloud services, Proceedings of the 6th international conference industry session on Grids meets autonomic computing (GMAC '09), J.C. Duenas, et al., System Virtualization Tools for Software Development, IEEE Internet Computing, vol.13, 2009.
43 Thank You! Questions M. Ali Babar malibabar.wordpress.com
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