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README.md

RFI CDT-ADPQ-0117

Please visit our Working Prototype

The personas and their credentials that could be used to sign in to the Cal eStore Application (Prototype A) are as follows.

######Authorized User:

Sign in Email Id: florinda.calestore@gmail.com

Password: User$123456

######Authorized Administrator:

Sign in Email Id: emma.calestore@gmail.com

Password: Admin$123456

Technical Approach

##Problem Statement

For our prototype, Enterprise Services needed to develop an application that allows California state employees to shop online for hardware, software, and related services. Users need to be able to place, cancel, track, and analyze their orders online. Additionally, authorized administrative users need to be able to publish product and service information, as well as track, analyze and view order data.

##Prototype - Definition, Goal, and Tasks

Our prototype, which we named Cal eStore, serves as an end to end application catering to authorized users and administrative users. The prototype features sample computing hardware, software, and related services from pre-established state contracts and allows users to compare and buy products, as well as track and review their orders. The prototype permits administrative users to publish and update hardware, software, and service information on the platform, along with the capabilities to analyze and view order data.

##Approach

Agile methodology served as the foundation for the prototype development. The Agile philosophy revolves around the concept of adding value to business as fast as possible in a Volatile Uncertain Complex Ambiguous (VUCA) environment. We followed scrum based agile methodology for the entire process. One of the key differentiators of Enterprise Services distributed agile delivery model is the Demand Team and Demand Planning. Major highlights involved in the entire process are as follows:

Creation of a cross-functional Demand Team: Our cross functional team was made up of groups of people with different functional expertise working toward a common goal. Cross functionality in scrum means a team composed of specialized generalists—individuals with breadth in a number of areas and disciplines.

The Demand Team consists of the following:

  • Product manager—delivery manager

  • Product expert—proxy product manager

  • Business analyst

  • Technical architect

  • Test lead—interaction designer/user researcher/usability tester

The Demand Team members spend 25-30% of their time shortlisting features for the next sprint, elaborating the product backlog, and preparing the sprint backlog for the next sprint. This model not only helps in early resolution of dependencies, approvals, and impediments, but also enables a 3-in-a-box model (product manager, product expert, and test lead) that ensures continuous collaboration. The Demand Team works toward definition of clear user stories with acceptance criteria, resolving dependencies and/or impediments, seeking approvals, etc. The Demand Team works with business owners and architects to understand enough about the requirements to enable creation of storyboards and high level design (HLD) documents; these form the basis of Knowledge Transfer (KT) for scrum delivery teams. Prior to a sprint kick off, all candidate themes and stories are presented to the team. The product expert focuses on analysis tasks while the technical architect produces the HLD.

Roles of the Demand Team: The roles of the demand team include the following:

  • Assist the larger team with definition of qualification criteria

  • Produce an HLD and impact assessment to feed into storyboards and sprint scope planning during the Demand Funnel phase

  • Define minimum criteria for entry to the product backlog

Demand Planning: The Cal eStore prototype development spanned three sprints in the scrum methodology. Each sprint was carefully compressed from a three week cycle to a crisp 5 days per sprint; thus adopting a time boxed sprint cycle of one week. The following are the highlights of each sprint:

  • Poker Method for Estimating: During each sprint, the scrum team began with a sprint planning meeting where the sprint backlog is story pointed using the planning poker method—a consensus based estimating technique. This technique helps in estimating the relative effort or size of user stories. In planning poker, members of the scrum team, except the scrum master, make estimates by picking cards that are numbered based on Fibonacci sequence. Planning poker forces members to think autonomously and put forward their own estimates simultaneously. People who have proposed high estimates and low estimates are asked to give justification for their estimation. The estimation is repeated until a consensus is reached on the estimation of story points.

  • Life cycle management tool (JIRA): Scrum teams commit to sprint backlog features based on their capacity and velocity. The Agile lifecycle management tool, JIRA, is updated with the planning information.

  • Meetings: During the course of the sprint, daily stand-up meetings are used to track progress and provide continuous feedback. When the work package is ready, the team demonstrates the working software to the business stakeholders for review and acceptance. Retrospective meetings are conducted at the end of every sprint to enable continuous improvement and agile maturity. At the end of each sprint the team meets to reflect on progress and identify possible improvements. This retrospective supports team formation and bonding, and may aid on conflict identification and resolution. Ultimately, the retrospective helps build the team's sense of ownership and self-management.

Agile delivery typically releases functionality into production at the end of each sprint. It is also normal for organizations to expect a few features to be released into production together to optimize release planning and management activities. Our Agile development processes support all of these aforementioned methods and were used for the Cal eStore prototype.

##User Centric Design

The success of any human end user application is based on how well the application is designed to allow users to navigate through features in a simple, intuitive way. We wanted the users to have a pleasant journey even though they may have no prior experience using a web application for purchasing electronics goods and services for their office. We also wanted the application to be intuitive without the need for providing a user training session on how to use the application. When we decided to develop Cal eStore, we knew user centric design was applicable to an online store for purchasing electronic goods and services.

We included prospective users throughout the design process and made sure their feedback was incorporated into each iteration of the prototype.

The UX Design team was responsible for employing user centric design, which includes conducting research for the user experience, persona development, Simple UX, and usability tests for wireframes to translate the product features into product designs. The UX design team consists of the visual designer, business analyst, front end web developer, and writer/content designer.

Following are the user-centric design techniques used for developing the application.

  • Research

  • Conducted interviews

  • Built personas

  • Created user stories

  • Developed wireframes

  • Performed role-play

  • Created mock-ups

  • Performed usability testing

##Extract, Transform, and Load (ETL) process

In the [ETL process](./Contributing Documents/Technical Approach ETL Process.pdf), we extracted data from the resource.pdf file which was provided in the RFI, loaded it in to the staging database and, based on visual scans and data profiling reviews, we developed custom business rules to transform the data. The transformed and cleaned data was loaded into the final fact and dimension tables.

For example, we decided to break the “Item Description” in to multiple columns like product name, operating system, processor, memory, storage, warranty, connectivity type, HDD RPM, and RAM type so that we can enable the product comparison feature in the Cal eStore.

##Architecture

The high level [architecture](./Contributing Documents/Technical Approach High Level Architecture.pdf) pertains to the architecture that we used for developing the prototype. The architecture outlines the main components and their interfaces.

Modular Design: The team modularized (a design approach which subdivides a system into smaller parts known as module) the framework so that the product could be assembled at a later point of time. The approach used was to unglue the dependency of user interface, business logic, and backend services. This approach vision gives the team more flexibility and also the ability to work independently without any negotiable dependency on others.

User Interface: For the User Interface, a small screen translation was designed along with a larger desktop and tablet screen size. The philosophy of responsiveness guided us to the use of ascendable, scalable and extendable elements. Instead of solely using back-end networks, front-end networks like Bootstrap, HTML5, CSS3 and jQuery were used to support the necessary responsiveness of the user interface.

Server End: SpringMVC and Hibernate were used to access data models from the server end. Controllers were designed in a way to be ported to any data service available and can be easily replaced with a data access model and web services.

Database: MySQL relational database was used to load the prototype’s data source.

##DevOps Automation

Continuous integration, delivery, and deployment is key to automating the delivery process. In order to successfully implement the concept of agile and continuous delivery it is highly important that collaboration and communication exist between various work groups. [DevOps](./Contributing Documents/Technical Approach DevOps Automation.pdf) is a set of processes and methods for this communication and collaboration of both software and information technology while automating the processes of software delivery and infrastructure changes.

The primary goal of any business is Time to Market (TTM). The challenge that lies ahead of the business is to move faster in a rapidly evolving market without compromising the quality of our product. Implementation of DevOps Automation is the answer to this. DevOps Automation employs the modus operandi to establish a process chain between development, deployment, testing and monitoring teams. It helps streamline the entire process efficiently.

Continuous Integration (CI): CI is used to communicate issues, such a potential bugs related to software, to the development team. The development team in turn acts quickly to resolve the issues associated to the software before it gets promoted to a higher environment. By using this method production failures can be reduced. Hence quality gateways are set in the CI pipeline, where builds will fail if software code does not meet actual quality standards. For example, bugs and vulnerabilities are categorized as Blocker, Critical, Major, Minor and Info. We set the quality gateway so that no “Blocker” or “Critical” issues are acceptable for promotion into higher environments. Failing code in the early stages is superior to failing later in the production stages. Additionally, security tools are introduced so that a strong wall against security attacks like SQL injections and cross-site scripting (XSS) is established. HPE Fortify is used for security scans to identify the vulnerabilities in the code. Fortify, identifies the piece of code where a potential vulnerability may occur, and provides the solution to fix the security issue.

Continuous Deliver / Deployment (CD): CD is leveraged so that quick releases were accomplished with incremental builds using test automation. We achieved high quality with CD tools which were able to create virtual machines (VMs) in a cloud on a demand basis. We selected configuration management tools to satisfy stated requirements and for functional and performance testing. Testing automation ensured that success and failure notifications are sent to the respective teams.

Continuous Monitoring (CM): One of the main requirements for any business activity is providing high availability to applications, so businesses leverage continuous monitoring of applications, system performance and network, and apply self-healing techniques with custom scripts. We used SiteScope for monitoring the Cal eStore application at the system level. The tool continuously monitors the available application and services, and restarts the services on the VM if it fails.

##Summary

This Technical Approach has described our process and methodology in creating the prototype. We had 27 functional user stories identified across 5 Epics (Profile, Catalog, Checkout, Manage Product Inventory, and Reports) during the Sprint 0 back log grooming session. Sixteen user stories were prioritized by the Product Manager and executed by the agile development team in three sprints. There are 11 user stories remaining in the backlog after end of Sprint 3. The documentation regarding the user stories is provided in the [JIRA presentation](./Contributing Documents/D.4b_JIRA tool example.pdf). We used our Global Agile Software Delivery Model to guide our project teams’ delivery, using a set of interrelated roles, practices, and work products that optimized the flow of business value delivery. Our project was a success, delivering on each goal we set for our prototype. Our prototype meets the needs of the prospective users and administrators.

  #US Digital Services Playbook

We complied with the US Digital Service: Digital Services Playbook in creation of our prototype. See the [Service Plays Table](./Contributing Documents/J.1_US Digital Services Playbook.pdf) for details about our approach.

  #RFI Requirements (a) through (t)

Team

(a) Leadership

Derek was selected as the product owner with authority and responsibility for providing the business case. Derek was ultimately accountable for delivery of the working prototype. Derek has over 20 years of Information Technology experience in software product development, implementation and operations management. This includes five years of Agile methodology experience in various team roles.

For this project, Derek oversaw the overall product prototype vision and acted as direct liaison to system users to gather feedback, conduct conceptual, wireframe and mock-up interview sessions. Derek interpreted the data and information gathered to create a product definition and epic stories. Additionally, he worked closely with the Scrum Master, Business Analyst and Technical Architect to organize and prioritize the prototype feature backlog.

(b) Collaboration team

We assembled a multidisciplinary, collaborative virtual team that included the following members in the roles indicated:

  • Derek - Product Manager - Provided final authority representing the customer's interest

  • Vasu - Agile Coach - Coached and mentored the team in Agile best practices

  • Lavanya - Scrum Master - Facilitated for the team and product owner

  • Satish - Technical Architect - Owned the overall application design

  • Dinesh - Business Analyst - Designed, built, tested, or ran the application

  • Ashvin - Visual Designer - Designed, built, tested, or ran the application

  • Nihar and Suresh - Front End Web Developers - Designed, built, tested, or ran the application

  • Suman - Backend Web Developer - Designed, built, tested, or ran the application

  • Utsav - DevOps Engineer - Designed, built, tested, or ran the application

  • Amit and Lata - Quality Assurance Analysts - Ensured quality throughout the project

  • Sandy - Technical Writer/Content Designer - Developed the strategy and execution of content  

Design and Development

(c) Understanding users

Utilizing both the Digital Services Playbook: Play 1 - Understanding What People Need and our Enterprise Services Design methodology, user needs were explored, captured, and documented early in the design and development process. The team quickly identified:

  • Different user roles

  • Needs of those users within the context of the service

  • Ways the service will meet identified needs

Additionally, interviews were conducted using role-play to further enhance the understanding and needs of users. The Product Manager, Derek, conducted the interviews to ask about administrator preferences in design and implementation, and user preferences in the shopping experience. The interviews were conducted from a script that followed the Digital Services Playbook. The interviewees gave input that was incorporated into the final prototype. For example, the following quotes were made by interviewees and incorporated into the prototype:

  • Make it simple to publish the new products.

  • I am unfamiliar with online ordering systems, so make it simple to establish my tasks.

  • I need a simple dashboard that gives me relevant insights on the user orders.

  • I order a lot of personal items from Amazon within minutes. I want the same experience for my official equipment ordering system.

More detail about our [understanding of users](./Contributing Documents/C.1_User Centric Design.pdf) is attached.

(d) User-centric design tools and/or techniques

Early in the development of the prototype, our team employed the following user centric design methods which are applicable and proven to be valid in use case scenarios. The following discussions elaborate on the elements of these seven user centric design techniques.

Research

The product manager and team researched current tool features, identified pros and cons, and applied what was learned to the prototype design. The team also collaborated with the product team at HP Inc.—associates of Enterprise Services—to shape the content of the prototype, including how the products should be displayed, the specific product specifications needed by the users, and similar items.

The product design team started the discovery process by exploring the resources available online, as well as reaching out to our existing commercial e-commerce platform development teams, to learn more about the actual facts that need to be addressed during the prototype development.

The team also evaluated several public e-commerce sites to draw an understanding of the existing landscape in the online shopping community. Sites evaluated include the following:

The design team was also inspired by the Enterprise Services Employees internal shopping website. This site allows authorized Enterprise Services employees access to buy products. An administrator controls the product publishing process.

Interview the user

This step involved preparing a questionnaire based on the Digital Services Playbook: Play 2: Address the Whole Experience, from Start to Finish and Play 3: Make it Simple and Intuitive. The interviews were held individually with a system user as well as a system administrator both of which were from outside the development team.

Build the persona

In the development process we based our prototype on the following fictional persona information.

California state user persona: Florinda Sanchez

Florinda has worked for the California Department of Education for over 9 years and is currently assigned the role of office manager for a team of 23 professional staff. The duties of office manager include timely ordering of desktop computer equipment and software for newly hired staff to ensure new employees are productive upon hiring. Florinda has many additional duties and responsibilities and therefore ease of ordering and order status tracking are very important to her and her team.

California state admin persona: Emma Mercier

Emma has worked for the State of California Procurement Division for 12 year and is currently responsible for overseeing all IT services purchased by several state agencies. Emma must ensure state agencies use existing state contracts for purchasing IT services and also helps to evaluate user feedback on services delivered to help negotiate future vendor contracts. Emma wants to ensure state users are getting the services they need within the confines of the existing contracts as well as making sure the state is getting the best prices possible with the various services vendors.

Create user stories

Based on requirements for the prototype and insight from potential users gathered via interviews, we created user stories to guide our development. This information was then refined and prioritized in a product backlog grooming session with the product owner. We have attached the [user stories](./Contributing Documents/D.4a_User Stories.pdf) and documentation of the [JIRA tool](./Contributing Documents/D.4b_JIRA tool example.pdf) where we capture the user stories.

Develop wireframes

As the starting point to represent the prototypes on layman’s terms, we developed wireframes. The team created the wireframes based on the user stories. The [initial user wireframes](./Contributing Documents/D.5a_User Initial Wireframe.pdf) and [initial administrator wireframes](./Contributing Documents/D.5b_Admin Initial Wireframe.pdf) are attached.

Perform role-play

We identified potential users from our team. Member 1 acted as an authorized user and Member 2 acted as the authorized administrator for the prototype. After creating preliminary wireframes, we did an interactive show-and-tell process for each user type where we collected feedback and challenges. The following points highlight the important feedback gathered from the users:

  • Quick intelligence search option for departments while user is creating their profile

  • Sign off option accessible from all screens of the application

  • During the checkout, an option to utilize the user’s default address located on the user’s profile 

  • Ability to use the home page slider for non-promotional info for user, new product published, new vendor added, new category added, and important messages from the admin user

  • Remove the item Availability Status from the Shopping Cart as "we should assume all the products for the user are available for purchase."

Availability might be a feature for admin user

  • At Checkout, show the Payment option as under the Department Contract “XXXX-XXXX-0123.” For security reasons the contract id will not be visible to users.

Based on the feedback, the wireframes were updated as needed. The final [user](./Contributing Documents/D.6b_User Final Wireframe.pdf) and [admin](./Contributing Documents/D.6a_Admin Final Wireframe.pdf) wireframes are attached.

Create mock-ups

Using the wireframes and user input, we created mock-ups that follow the US Web Design Standards. Following these standards allows the user to have a pleasant experience when utilizing the application. Mock-ups are based on a simple and flexible design style guide. The mock-ups were used in the usability testing for the Visual Design.

(e) GitHub code commits

GitHub was used as our source code management tool for daily code commits. We also used GitHub for storing documents related to the prototype.

(f) RESTful API

We used Swagger to document the Cal eStore RESTful API. Our link to Swagger API for Cal eStore is: http://13.64.248.119:8080/calestore/swagger-ui.html. Further detail of our [Swagger](./Contributing Documents/F.2_Swagger Specification.pdf) and [code flow updates](./Contributing Documents/F.3_Swagger documentation.pdf) are attached.

(g) ADA Section 508 and WCAG 2.0 compliance

To comply with WCAG, our team used HTML5 and CSS3 technology during front end development. Once built, the code was tested against the W3 standard site. This methodology supports compliance with Section 508 of the Americans with Disabilities Act. See our [WCAG and W3 Compliance Tables](./Contributing Documents/G.1_ADA WCAG Compliance.pdf) for details.

(h) Design style guide and pattern library

We used the US Web Design Standards UI component library and strictly followed brand guidelines to define color, typography, form fields, spacing and click-throughs. Use of U.S. Web Design Standards further ensured that selected standardize color palettes are visually appealing. See our [Design Document](./Contributing Documents/H.1_Design Style Guide and Pattern Library.pdf) for details of how we have implemented these standards.

(i) Usability testing

While designing our prototype, we invited several prospective users to role play to review wireframes and provide feedback. We considered Usability Testing as a critical component of the application development to identify gaps and additional items we needed to address for user needs. Specifically, we tried to understand whether users thought the flow of the application and initial interactions were intuitive. Our approach was to provide the wireframe to a user who was not involved in the design process and capture his or her thought process while going through the application wireframes. We also created a list of pre-defined questions to ask the users. More detail of our Usability Testing related to the [wireframe](./Contributing Documents/I.2_Usability Testing Wireframes.pdf) is attached.

While designing our prototype, we invited prospective users to role play and provide feedback on visual designs by interacting with HTML mock-ups. Our design team and business analyst conducted a face-to-face interview with the users and asked many questions to simulate possible tasks the user would perform when using the real application. To ensure unbiased feedback, the users interviewed were unfamiliar with the project requirements for the prototype. More detail of our Usability Testing related to [Visual Design](./Contributing Documents/I.1_Usability Testing Visual Design.pdf) is attached.

(j) Iterative Approach

We used an iterative design approach following the Enterprise Services Global Agile Software Delivery Model. We have developed and fine-tuned the Global Agile Software Delivery Model to guide our project teams’ delivery of projects using Agile delivery models. At its core our global Agile software delivery model is based on the Agile manifesto, principles, and the scrum delivery model. We have attached our [Agile Delivery Model](./Contributing Documents/A.1_Agile Scrum Process.pdf).

(k) Multiple Device and Responsive Design

Our design includes small-screen translation, in addition to larger desktop and tablet screen sizes as shown in [Screen Sizes example](./Contributing Documents/K.1_Screen Size Examples.pdf).

A responsive philosophy directed our use of scalable and extendable elements. To support this, the team used frontend frameworks such as Bootstrap, HTML5, CSS3 and jQuery; proven aids for personal and professional responsive design frameworks.

We used a GRID based layout to ensure consistency, balance, rhythm, and order. GRID is an important tool in user experience design and provides a level of familiarity which enables users to intuitively navigate through a site or application in a way which feels natural.

Technology

(l) Open-Source Usage

We used the following open-source technologies in creating the Cal eStore application. The list includes product names and versions.

  • HTML5 - Used for structuring and presenting content on the World Wide Web

  • CSS3 - Used for describing the presentation of a document written in a markup language

  • MySQL DB - Used for web application development

  • jQuery - Used to ease the client-side scripting of HTML

  • Bootstrap - Used to design templates for typography, forms, buttons, navigation and other interface components

  • Spring MVC - Used for layered architecture to select component you want while others are ignored and it’s both comprehensive and modular

  • Hibernate - Used for mapping an object-oriented domain model to a relational database

  • Ajax - Used for exchanging data with a server and updating parts of a web page without reloading the entire page

  • Jenkins (2.32.1) - Used for continuous integration and continuous delivery of projects

  • SonarQube (6.2) - Used for continuous inspection of code quality

  • Selenium - Used to perform functional test cases on prototype

  • JMeter - Used to test performance both on static and dynamic resources

  • Nexus (3.2.0) - Used to store the prototype artifacts

(m) IaaS and PaaS

Our team used Microsoft Azure’s global network of managed data centers for both IaaS and PaaS. For IaaS, we managed our own operating system, runtimes, Virtual Machines (VMs) and container based deployments using Docker. For PaaS, we controlled the application and data.

Testing

(n) Automated unit tests

Automated unit testing is a method of testing software in which units (small sections) of code are rigorously checked to ensure they work correctly. The goal of automated unit testing is to demonstrate that each individual part of a larger software development project works as intended.

Automated unit tests may also aid in documenting the software's functionality.

The results of a unit test help gain insight into how the code interfaces with the systems on which they run. Developers may also see how the code interacts with the end users who provide it with input and other units that are part of the same software package.

We used JUnit (Java Unit test) to develop test cases and JaCoCo (Java Code Coverage) to automate test cases in continuous integration.

As part of the Cal eStore application quality check and validation process we have performed automated functional testing. Selenium was the primary tool of choice for implementing Test Automation. We have created [testing scenarios](./Contributing Documents/N.3_Test Cases.pdf) that will help to create automated testing. The detailed information is [attached.](./Contributing Documents/N.1_Automated testing.pdf) We also provide a [short video](./Contributing Documents/N.2_Automated functional testing.mp4) explanation which can be downloaded for viewing.

We have also performed performance testing for the application by simulating the surges in traffic to identify performance bottlenecks. We have used the jMeter Graphical Server performance testing tool which is an Open Source testing software. More detail about the [performance testing](./Contributing Documents/N.4_Performance Testing.pdf) is attached. This testing was conducted on a minimum capacity server.

DevOps Automation

The details of our Continuous Integration architecture are found in our [Technical Approach to DevOps Automation](./Contributing Documents/Technical Approach DevOps Automation.pdf) attachment. In this document you will find the details for items o, p, q, and r.

(o) Continuous Integration pipeline for IaaS or PaaS code deployment

We used the following tools for our Continuous Integration pipeline:

  • Jenkins to orchestrate Continuous Integration

  • GitHub to retrieve source code

  • JaCoCo to run the JUnit test cases

  • SonarQube to perform static code analysis

  • HP Fortify to complete vulnerability scans

  • Nexus to store the prototype artifact

  • Selenium to perform functional test cases on prototype

See page 4 of the Technical Approach to DevOps Automation document.

(p) Configuration management

For configuration management, we used Ansible. We also wrote playbooks to do incremental software releases to Dev, Staging, and Production environments. We used Jmeter for performance testing. A notification mechanism was also set to alert select team members of system failures. See page 12 of the Technical Approach to DevOps Automation document.  

(q) Continuous monitoring

We used SiteScope to monitor application and system performance. Custom scripts were written based on certain condition for “self-healing” within the services. A notification mechanism was also set to alert select team members of system failures. See page 14 of the Technical Approach to DevOps Automation document.

(r) Container based deployment

Our team setup and used container based deployment. The CI process generates a .war file and Jenkins uploads it into Nexus, which acts as a central repository for the artifacts. For deployment, Ansible is called to download the latest .war file from Nexus to build a docker image and upload that image to a docker registry—in this case Nexus. In the final step, Ansible retrieves the Docker image from Nexus, deploys it to the target nodes, starts the container, and keeps all of the environments consistent. See page 15 of the Technical Approach to DevOps Automation document.

(s) Installation guide

The following is our installation guide for our Cal eStore prototype:

The personas and their credentials that could be used to log in to the Cal eStore Application (Prototype A) are as follows.

######Authorized User:

Log in Email Id: florinda.calestore@gmail.com

Password: User$123456

######Authorized Administrator:

Log in Email Id: emma.calestore@gmail.com

Password: Admin$123456

(t) Prototype and underlying platforms

The packages and platforms used to build and run the prototype are open-sources.