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Comprehensive Information on Software as a Service

Software as a service (SaaS) is a delivery model of cloud computing that is used by many business applications. It entails licensing software, which is centrally hosted, on a subscription basis.<br>

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Comprehensive Information on Software as a Service

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  1. Comprehensive Information on Software as a Service

  2. Table of Contents • Cloud-based Solutions • Cloud Service Models • Example of Iaas, PaaS and SaaS • Software as a Service (SaaS) • SaaS Delivery • SaaS Characteristics • SaaS Advantages • When to Use SaaS • SaaS Limitations and Concerns • Lack of Control • Interoperability • Lack of Integration Support • Data Security • Vendor Lock-in • Customization • Feature Limitations • Performance and downtime

  3. Cloud-based Solutions • An on-demand delivery of computing resources that can be accessed via the Internet and through the shared cloud computing infrastructure of another provider is known as a cloud-based solution (cloud). Access is provided by it to many resources (storage space, networks, software and applications and other on-demand services). • Increased scalability as well as functionality, a reduction in cost with regard to computer infrastructure, maintenance and for keeping and training an in-house IT staff, are the benefits that are provided by cloud-based solutions. Such solutions help companies to focus on their core business. • There are 3 categories of Cloud pricing models. These are- • Servers in the cloud • Applications/sites in the cloud • Storage in the cloud

  4. Cloud Service Models • Cloud service models are of three types. These are distinctly different from each other. These three types of cloud service models are capable of interacting with each other for the purpose of forming a comprehensive cloud service model. The three types of cloud service models are mentioned below, in no particular order. • Infrastructure as a Service (IaaS) • Platform as a Service (PaaS) • Software as a Service (SaaS)

  5. Example of Iaas, PaaS and SaaS • IaaS- Amazon Web Services (AWS), Microsoft Azure, DigitalOcean, Linode, Rackspace, Google Compute Engine (GCE) and Cisco Metapod. • PaaS- Windows Azure, AWS Elastic Beanstalk, Heroku, Force.com, Apache Stratos, OpenShift, and Google App Engine. • SaaS- Cisco WebEx, Google Workspace, Dropbox, Salesforce, GoToMeeting and Concur. • To digress, the Internet is used to access numerous websites. These websites are made accessible by web hosting companies that provide server space and the necessary technology and services that are needed to keep a website up and running and accessible over the Internet. There are various types of web hosting, such as Linux Dedicated Server Hosting, Windows Dedicated Hosting, WordPress Hosting in Indiaand abroad etc.

  6. 1-800-123 -8156 Whoa! That’s a big number, aren’t you proud?

  7. Software as a Service (SaaS) • SaaS (Software as a Service) is the most commonly utilized option in the cloud market for enterprises and involves the usage of the Internet to deploy software to various businesses. It is an ideal option for short-term projects and functions as an important tool for applications that need a considerable amount of web or mobile access. • SaaS is managed from a central location. Hence, businesses don’t need to worry about its maintenance. SaaS delivers applications, which are managed by a third-party, to its users over the Internet. Most of the SaaS applications can be run directly via the web browser. This eliminates the requirement for downloads or installations on the client side.

  8. SaaS Delivery • SaaS follows a web delivery model. This does away with the need to download and install applications on each individual system. SaaS calls for vendor management of all potential technical issues that have to do with data, servers, middleware and storage. This ensures maintenance that is streamlined as well as support for the business.

  9. SaaS Characteristics The main characteristics of SaaS are described below. These are mentioned in no particular order. • Accessible over the Internet • Managed from a central location • Users are not responsible for hardware or software updates • Hosted on a remote server

  10. SaaS Advantages There are numerous advantages of SaaS that benefit both, employees and companies. It lessens to a great extent the time as well as the money that is required for the purpose of installing, upgrading and managing software. SaaS solutions usually exist in cloud environments, which are scalable and can be integrated with other SaaS offerings.

  11. When to Use SaaS SaaS proves to be the most beneficial solution in several situations. Some of these are mentioned below. • Applications that require both, web and mobile access • Startups or small-sized companies which don’t have time for server issues or software • Short-term projects that need swift, easy and affordable collaboration • Applications that are not used too often

  12. SaaS Limitations and Concerns • The limitations and concerns with regard to SaaS are, a lack of control, interoperability, a lack of integration support, data security, vendor lock-in, customization, downtime, and limitations with regard to features and performance. These will be discussed in more detail in the following slides.

  13. Lack of Control • Third-party service providers control SaaS solutions. These controls are not limited to the software with regard to the updates, versions as well as appearance but include data and governance as well. Hence, customers might need to redefine their models that have to do with data security and governance, in order to accommodate the SaaS service’s features and functionality.

  14. Interoperability • Integration with existing applications and services can be challenging in the event that the SaaS application has not been designed to follow integration’s open standards. Such a situation will require that organizations design their own integration systems. The other option for such organizations is to decrease dependencies on SaaS services. This might not be possible in every situation.

  15. Lack of Integration Support • Many companies require integration with on-premise applications, data and services. If a SaaS vendor provides limited support in this regard, then organizations will be forced to invest internal resources for the purpose of designing as well as managing integrations. The SaaS application’s or other dependent services’ usage can be further limited by the complexity of integrations.

  16. Data Security • There might be a requirement to exchange large volumes of data with the backend data centers of SaaS apps for the purpose of performing the necessary software functionality. When sensitive business information is transferred to public-cloud based SaaS service, it might lead to compromised security and compliance. Moreover, it might result in a considerable cost for large data workloads’ migration.

  17. Vendor Lock-in • It might be made easy by vendors to join a service but difficult to opt out of it. This might happen in the situation when the data is not portable, either technically or cost-effectively, across SaaS apps from other vendors without having to bear a significant cost or in-house engineering rework. Moreover, not all the vendors follow standard protocols, APIs and tools but these features can be essential for certain business tasks.

  18. Customization • The least amount of customization capabilities are offered by SaaS apps. Hence, users might face limitations with regard to specific functionality as well as performance and integration, due to what has been offered by the vendor. However, those on-premise solutions which have several software development kits (SDKs) provide more customization options.

  19. Feature Limitations • SaaS apps usually come in standardized forms. Hence, the choice of features might prove to be a trade-off between cost, security, performance and other organizational policies.

  20. Performance and downtime Since a vendor controls as well as manages the SaaS service, the customers will have to depend on the vendor for the maintenance of the security and performance of the services. The performance of the SaaS app might be impacted by planned as well as unplanned maintenance, network issues and even cyber-attacks, even if adequate service level agreement (SLA) protections exist.

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