SaaS provides a complete software solution that you purchase on a pay-as-you-go basis from a cloud service provider. Cloud application services, or Software as a Service (SaaS), represent the largest cloud market and are still growing quickly. 5. The data is made accessible to multiple users via an online service. In comparison with IaaS and SaaS, clients have less security responsibility. IaaS vs PaaS vs SaaS. The benefit of PaaS is that it is compatible with different languages for programming, and it has full control to create custom software. This model is usually called XaaS or Anything-as-a-service. SaaS providers handle all maintenance and support, which eliminates the need for users to install and run their own infrastructure and software. The end product is an application that you want to use. Kinsta. Saas: Software As A Service. Cloud Technology Services are of Three Types: IaaS full form is Infrastructure as a Service. SaaS apps also tend to receive features and benefits faster. SaaS Examples. SaaS. Digital servers and cloud storage, as well as cloud protection and access to data centre services, are all included in IaaS. 8 billion in 2024, up from $563. folk, whether in Storage, Virtualization, Change Management or Project Management love the use of acronyms and synonyms to express key concepts amongst each other. IaaS, PaaS, and SaaS are essentially the three main pillars of cloud computing. SaaS, PaaS, and IaaS allow companies to enter the marketplace and grow without prohibitive costs for on-premise IT. Infrastructure As A Service (IaaS) It is the most flexible type of cloud service which lets you rent the hardware and contains the basic building blocks for cloud. Cloud-based service models can be distinguished in software as a service (SaaS), platform as a service (PaaS), and infrastructure as a service (IaaS) (Mohammed & Zeebaree, 2021). This provides a lot of flexibility, often balancing between customizability,. This is by far the broadest term, and can refer to any number of products bought from dozens of vendors. The frameworks PaaS provides is often used by developers so they can accelerate the development of their applications. IaaS is one of the four types of cloud services, along with software as a service ( SaaS ), platform as a service ( PaaS ), and serverless. IaaS: Best for projects that need a high level of control over resources, and you’re willing to shoulder the complexity and cost that comes with it. IaaS: Definitions and Differences. It mainly delivers the tools required for developing various applications. Instead, they store data on the servers of IaaS providers, and use a dashboard or API (application programming interface) to access and manage their. SaaS, on the other hand, is a software delivery. Customers don't need to install anything; they simply. Well, there are 3 types of cloud computing: Infrastructure as a Service (IaaS), Platform as a Service (PaaS), and Software as a Service (SaaS). 6 billion in end-user spending in 2022. Enterprises can rent or lease servers through Infrastructure as a Service (IaaS), a cloud computing service, to use for cloud computing and storage. 1) paid work by another person, either by contract or as an employee. n. ) Read more about IaaS, PaaS, and SaaS. Understanding the differences between PaaS vs. 9 percent, and PaaS, which is growing at a rate of 18. SaaS makes it easy for you to focus on your core business. IaaS, PaaS, and SaaS – you’ve probably seen the acronyms for these cloud computing service models bounded around a lot lately. SaaS platforms are: Available over the Internet. It functions to provide various visualized computing resources all over the internet. SaaS: Software as a Service. If you don’t already have a logging standard, here is some help understanding why you need one and what LaaS can. Companies often choose SaaS when they lack sophisticated internal IT capabilities and are looking to have a simple, straightforward tool designed for a specific purpose. It facilitates the use of software. For that to happen, you need to manage: datacenters, servers, networks, virtualization, operating systems, runtime, storage, middleware, data, applications, and monitoring. RACE is managed by the Defense Information Systems Agency (DISA), a government service provider that supplies and supports. To conclude, in this post we saw three as-a-service paradigms: Infrastructure, Platform, and Software. Encryption methods including algorithms like 128-bit AES, Triple DES, RSA. Essentially, users purchase access to the servers and infrastructure necessary to deploy. Understanding each type of service and how they are different can help you. The different service levels available govern how you utilize cloud computing to build and manage your IT infrastructure. Software as a service (SaaS / s æ s /) is a software licensing and delivery model in which software is licensed on a subscription basis and is centrally hosted. SaaS-based businesses lose control over the data since it is managed by a particular third-party vendor. 1 position in the IaaS market in 2022, followed by Microsoft, Alibaba, Google and Huawei. 7 percent. The requirement for portable accessibility of programming has reformed the universe of could processing. The 3 main types of cloud services: IaaS vs PaaS vs SaaS. Knowing exactly what PaaS entails is vital when comparing PaaS vs. In fact, email services such as Gmail and Hotmail are examples of cloud-based SaaS services. Cloud computing has enabled companies to access a number of services over the internet. IaaS, PaaS, and SaaS are all different options for cloud delivery models. So, here are a few examples of these services: Popular SaaS products. Another angle: 80% of business organizations experienced at least one cloud security breach incident. Infrastructure as a Service (IaaS) 2. The company partners with innovative retail banks, startup banks, credit unions, and online lending platforms. It is the most close to the “metal” out of the terms. Store, maintain, and manage a business’s database. Increase Security: SaaS providers invest heavily in security technology and expertise. IaaS: Infrastructure as a Service. Each has its own distinct use and purpose, and understanding them. SaaS: software that is available via a third-party over the internet. [2] Large clouds often have functions distributed over multiple locations, each of which is a data center. IaaS — infrastructure as a service. Software testing services such as Vates are third-party. PaaS and SaaS share the same mode of delivery. This system has been set up by cloud service providers across the globe. Platform as a Service means that the server’s operating system is managed by the vendor, and the client only has control over the applications. SaaS Market Share. IaaS offers the lowest level of abstraction. Source: t4. IaaS = Infrastructure as a Service == Virtual computers with appropriate operating systems that are automatically patched in the cloud, user brings applications and data. Together, the NEA, SAAs, and LAAs represent the public funding network of agencies that distribute grants and services to artists and cultural organizations across the nation. PaaS providers manage the underlying infrastructure and provide a complete development environment. On-demand scalability. AWS approaches Software-as-a-Service (SaaS) as a business and software delivery model that enables organizations to provide their offering to customers in a low-friction and service-centric manner. Service providers can either contract 3rd party cloud service providers for hosting their apps or host apps on their servers. Software as a Service implies that all basic system settings are managed by the vendor, and the client can access the application via the Internet connection. The Difference Between IaaS, PaaS and SaaS. What Is IaaS? SaaS vs IaaS vs PaaS (Source: eG Innovations)Sometimes known as infrastructure cloud services, infrastructure as a service (IaaS) provides users with cloud-based alternatives to digital infrastructures, such as servers for storage and virtualization. Infrastructure-as-a-Service, commonly referred to as simply “IaaS,” is a form of cloud computing that delivers fundamental compute, network, and storage resources to consumers on-demand, over the internet, and on a pay-as-you-go basis. They experience about 86% positive ratings from the total customer interactions and feedback. The cloud market share between the PaaS, IaaS, and SaaS shows that SaaS is the clear leader, with IaaS in second place, according to the latest data from Gartner. SaaS Pros and Cons Pros (SaaS Benefits) Compared to most on premise solutions, SaaS tends to be quicker to implement due to the pre-provisioning of standard hardware and software. There are 3 main types of cloud computing as-a-service options and each one covers a degree of management for you: infrastructure-as-a-service (IaaS), platform-as-a-service (PaaS), and software-as-a-service (SaaS). Every one of the cloud models has its very own arrangement of advantages that could serve the requirements of different organizations. Infrastructure as a service. Zendesk is a SaaS company that has annual revenue of more than $5 million. IaaS is highly flexible, and it enables clients to retain complete control. All you need is to choose your provider and. PaaS providers manage the underlying infrastructure and provide a complete development environment. At first sight it looks brilliant — but if you look in depth, it falls apart. PaaS is a middle ground between IaaS and SaaS for running enterprise architecture, such as databases, web servers, etc. “Cloud has become essentially indispensable,” said Sid Nag. Develop and manage application programming interfaces (APIs). There are the following characteristics of SaaS - Managed from a central. Whichever metaphor you use to describe. Hosted software. Since a third-party vendor manages the SaaS service, performance and security are all dependent on them. It presents details like times, dates, and expectations concisely while leaving little room for misinterpretation. The customer only uses the software via the internet, and the provider is responsible for managing the infrastructure and platform. XaaS (Anything as a Service): XaaS is a general, collective term that refers to the delivery of anything as a service. Though still not as large as the SaaS market, IaaS market growth is outpacing that of SaaS. SaaS is suitable for scenarios where you need to use ready-made and standardized software solutions, such as email, CRM, or collaboration tools. Azure SaaS. Difference between IaaS SaaS PaaS CaaS FaaS!! Today, everyone are moving towards Cloud World (AWS/GCP/Azure/PCF/VMC). As businesses and technology continue to merge, migrating to the. Platform as a Service vs. Using the cloud for data storage has several benefits, including flexible access to data from a. DaaS. Paas: Platform As A Service. PaaS (Platform as a Service) providers sell access to everything a customer would need to develop an app. Infrastructure as a Service provides you with the highest level of flexibility and management control over your IT. Platform as a service (PaaS) allows developers to build apps without having to host them themselves, whereas SaaS refers to software that you can buy or sell to help software companies (or others) get things done. The leading service in the cloud computing industry is SaaS with a 39. Examples: There are loads: Google G-Suite, Dropbox, Cisco Webex, Concur, Microsoft O365, Genesys, PayPal. Less Responsibility = Less Control. Dropbox; Cisco WebEx; GoToMeeting; Google GSuite; BigCommerce; SaaS Limitations. Infrastructure as a Service (IaaS) provides access to virtualized compute resources, such as servers. Keberadaan Cloud Computing menjadi salah satu teknologi yang sangat membantu dalam dunia bisnis. The actual application runs in cloud servers that may be far. Knowing exactly what PaaS entails is vital when comparing PaaS vs. leasing hardware infrastructure, operating systems, and application programs to another organization. As mentioned in the preceding section, the importance of applications in a virtualized environment has brought about three major trends in cloud computing: Infrastructure as a Service (IaaS): Used to manage low-level resources like VMs and disks. It refers to complete software that can be used in return for a recurring subscription fee. Cloud models come in Four kinds: SaaS (Software as a Service), IaaS (Infrastructure as a Service), PaaS (Platform as a Service), and FaaS (Function as a Service). Platform as a service (PaaS) is a cloud computing model in which a third-party provider delivers hardware and software tools -- usually those needed for application development -- to users over the internet. It focuses on helping developers with better functionalities for easily. IaaS vs. A private cloud is a cloud service that is not shared with any other organization. The term SaaS first appeared in late 2006 as a marketing term. During a SaaS interview, the hiring manager is likely to ask you questions about your skills, experiences and your opinion on the future of their business or the industry. PaaS service model delivers a platform that is necessary for application development. Software as a Service, also know as SaaS, is a cloud-based service where instead of downloading software your desktop PC or business network to run and update, you. We’ll cover each type of model, the benefits, and how you can use any or all of them. Remote delivery. Unlike SaaS and IaaS, it refers to only networking hardware, software, and services delivered in a “cloud-like” motion, which implies subscription-based or consumption-based billing. Software as a service (SaaS) is a cloud-based software delivery model in which the cloud provider develops and maintains cloud application software, provides automatic software updates, and makes software available to its customers via the internet on a pay-as-you-go basis. §Enhanced mobile optimization is becoming a top priority. 1. So, users should choose what to invest in based on their needs. While each has its. Last week SaaS was a term I wasn't familiar with. SaaS is one of three main categories of cloud computing, alongside infrastructure as a Service (IaaS) and Platform as a Service (PaaS). With SaaS, you tradeoff loss of control, security, and performance in exchange for time and maintenance savings. Unlike the IaaS model, PaaS providers manage runtime, middleware, and operating systems. SaaS is a little different. SaaS. SaaS offers ready-to-use, out-of-the-box solutions that meet a particular business need (such as a website or email). IaaS vs. IaaS, PaaS, and SaaS are essentially the three main pillars of cloud computing. SAAS Cloud Computing Abbreviated as Software as a Service, it is a software that is deployed as a hosting service and is accessed over the Internet. Typically, IaaS provides access only to core infrastructure components: compute, networking and storage. Research has shown that the global SaaS market is expected to grow 13. April 14, 2020. SaaS solutions are fully managed by the third-party vendor—from the application's updates to the client's data to storage. IaaS offers on-demand access to cloud-hosted virtual and physical servers, storage, and networking. The provider delivers software based on one set of common code and data definitions that is consumed in a one-to-many model by all contracted customers at anytime on a pay-for-use basis or as a subscription based on use metrics. The resources that are available through SaaS are. What you must take into account is that a platform as a. The SLA’s primary purpose is to define the level. SaaS vs. Companies often choose SaaS when they lack sophisticated internal IT capabilities and are looking to have a simple, straightforward tool designed for a specific purpose. However, PaaS customers still get to manage data and applications—in contrast to the SaaS model, where customers don’t have to manage. IaaS offers on-demand access to cloud-hosted virtual and physical servers, storage, and networking. Infrastructure as a service (IaaS) is a type of cloud computing service that offers essential computing, storage, and networking resources on-demand, on a pay-as-you-go basis. Although these categories share. Data resiliency is a key Azure feature. PaaS vs. laaS Characteristics & Examples. 4% cloud computing market share in 2021, followed by the fastest-growing cloud service IaaS with 20. Typically, IaaS provides access only to core infrastructure components: compute, networking and storage. ) Techniques used for token management —authentication, and authorization. Easily accessible from multiple locations (by multiple teams) Ex – App Engine from Google Cloud. Depending on your need for flexibility and customization, each model has its pros and cons. SaaS is also the easiest to maintain because the cloud providers manage everything. While SaaS is currently the largest cloud service in terms of spend, IaaS is currently projected to be the fastest. PaaS offers the computational power and the OS that manages it. As technology develops, new variations of cloud computing services pop up. This model provides businesses with greater flexibility. Understanding the differences between these service models is essential for. IaaS, PaaS, and SaaS aren’t entirely separate concepts. In effect, each of these models offers a progressive level of abstraction – or management – by the cloud provider. A few examples of existing SaaS programs include MailChimp and Shopify. Software-as-a-service, or SaaS for short, is a cloud-based method of providing software to users. The main difference between IaaS and PaaS, which we’re going to cover in a second, is that IaaS clients are responsible for managing applications, runtime, OSes, middleware, and data. With SaaS, vendors manage the data, servers and storage, ultimately eliminating the need for IT review and streamlining business processes. Iaas is the simplest cloud offering. This solution offers a ready to go suite for. IaaS is also known as Hardware as a Service (HaaS). 5. These all together are known as cloud computing stack as each service is built ‘on top of’ each another. Most importantly, they all exist in the same sky, ready to be accessed by the people below. It runs like software, but it can be used as a platform to support your entire logging infrastructure. However, PaaS customers still get to manage data and applications—in contrast to the SaaS model, where customers don’t have to manage. Public arts funding suffered a decline during fiscal year 2021 due to constrained resources during the pandemic. Most modern SaaS platforms are built on IaaS or PaaS platforms. Source: t4. Data Platform as a Service (PaaS)—cloud-based offerings like Amazon S3 and Redshift or EMR provide a complete data stack, except for ETL and BI. SaaS is delivered through the internet as a full functional service, accessible via any web browser. "Personal services" is work that is either unique (such as an artist or actor) or based on a person's particular relationship to employer (such as a butler, nanny, traveling companion or live-in health care giver). This Tec2Check video explains the main differences between Infrastructure as a Service (IaaS), Platform as a Service (PaaS), and Software as a Service (SaaS). Typical examples are PaaS (Pizza as a Service), LaaS (Love as a Service), or NaaS. Most. 4% cloud computing market share in 2021, followed by the fastest-growing cloud service IaaS with 20. By choosing. Worldwide end-user spending on public cloud services is forecast to grow 20. IaaS (Infrastructure as a Service), as the name suggests, provides you the computing infrastructure, physical or (quite often) virtual machines and other resources like virtual-machine disk image library, block and file-based storage, firewalls, load balancers, IP addresses, virtual local area networks etc. IaaS vs PaaS. Iaas users have complete control over their infrastructure and can customize it to their specific needs. IaaS services can be used for a variety of purposes, from hosting websites to analyzing big data. It allows businesses to access the resources they need without depending on their own servers. I'm grateful for Coursera and all the…Microsoft has begun rolling out the Windows 10 incarnation of its Copilot tool to Windows Insiders in the Release Preview Channel. In other words, IaaS is a virtual data center. Get to know the ins and outs of cloud security and learn exactly what your company is responsible for. That lets a customer develop and run business applications. More comprehensive cloud services or SaaS means easier setup but less flexibility. Types of arrangements. Even though PandaDoc’s template uses legal language, it remains a strong SLA because the. PaaS provides on-demand quick provisioning of platform software or middleware execution environment such as message queue, relational database management systems and container orchestration systems. Within the world of cloud computing, IaaS, PaaS and SaaS each achieve different goals for their users. Three Common Cloud Service Models. SaaS is popular across industries for its user-friendly software solutions. Find out differences between SaaS, PaaS, and IaaS. As a result, cloud computing has grown tremendously over the past few years. IaaS (Infrastructure as a Service) is the building block for cloud-based computing. DaaS. Iaas users have complete control over their infrastructure and can customize it to their specific needs. With IaaS, hosted services can access user-oriented software and hardware while reducing IT costs and boosting security. SaaS. key characteristics of the SaaS model across the board. They each have their own pros and cons, and the difference between them is the level of abstraction they offer the end-user. Actually IaaS is smaller form of PaaS and IaaS is the lowest level in cloud computing. SaaS Pros, Cons and Use Cases. SaaS uses the web to deliver applications that are managed by a third-party vendor and whose interface is accessed on the. ; PaaS: Ideal for developers who want to build applications without worrying about the underlying infrastructure but wish to maintain some level of control. These easily confusable abbreviations stand for: Infrastructure as a Service (IaaS) Platform as a Service (PaaS) Software as a Service (SaaS) “As a service” simply means a facility, usually related to IT, computing, or. Understanding the. IaaS vs PaaS. 9%, and PaaS with 18. Infrastructure-as-a-Service (IaaS) – It is a cloud-based infrastructure. MailChimp, DocuSign, Slack, Google Apps, GoToMeeting, Dropbox, Cisco WebEx,. SaaS is the most popular form of cloud computing. Many agile and DevOps teams use IaaS to build their platforms. SaaS is known as software as a service. They probably provide MySQL for you and deal with backups, but you create the databases and work. scalability, cost model, disaster recovery) while maintaining a large degree of control. SAAS: Software As A Service (SAAS) allows users to run existing online applications and it is a model software that is deployed as a hosting service and is accessed over Output Rephrased/Re-written Text the internet or software delivery model during which software and its associated data are hosted centrally and accessed using their client, usually an online browser over the web. Testing as a Service (TaaS) Testing as a Service is a cloud solution that works best for businesses looking to improve the quality of their software. " IaaS vs. IaaS vs. On-demand software. SaaS (Software as a Service) is the most frequently used of these terms. IaaS is about managing computing resources in the cloud – servers, hardware, software, networks and other infrastructure components, and everything is managed by the cloud providers. Examples include Microsoft 365 and Salesforce. SaaS (sometimes called cloud application services) is cloud-hosted, ready-to-use application software. SAAS is used by the end user. Data Storage: Data is routinely saved in the cloud. Software as a Service, also know as SaaS, is a cloud-based service where instead of downloading software your desktop PC or business network to run and update, you. IaaS is typically used for computing, storage, and networking, while PaaS is used for application development and deployment. Store, maintain, and manage a business’s database. Common examples are email, calendaring, and office tools (such as Microsoft Office 365). FaaS vs SaaS, PaaS, and IaaS. By contrast, a public cloud is a cloud service that shares computing services among different customers, even though each customer's data and applications running in the cloud remain hidden from other cloud. SaaS: Software as a Service. SaaS users subscribe to an application rather than purchasing it once and installing it. . This audience is, however, very different from those for the. PaaS providers (many IaaS providers also offer PaaS) are more specialized and provide the framework needed on top of pure infrastructure. More and more, applications that are being offered as both SaaS and on-premises versions are seeing their on-premises versions being retired. Software as a service (SaaS) allows users to connect to and use cloud-based apps over the Internet. SaaS providers manage both infrastructure and software applications. PaaS is a cloud computing model. However, SaaS still meets many of the main qualifiers of a serverless application such as. PaaS = Platform as a Service == virtual computers in the cloud, user brings operating systems and software and data. In this article, we'll compare different cloud. Now that you know more about FaaS, you might wonder how it relates to other Anything as a Service (XaaS) options like IaaS, SaaS, and PaaS. Reiterating the biggest difference between SaaS and cloud-based services, SaaS is only one part of the larger Cloud. The National Institute of Standards and Technology (NIST) recognizes three standard cloud computing models of as-a-service: Infrastructure-as-a-Service (IaaS), Platform-as-a-Service (PaaS), and. PaaS. SaaS lets them work together to craft documents, discuss images or analyze data. The private cloud user has the cloud to themselves. For example, PaaS allows developers to create custom applications using an API deployed in the cloud. IaaS, PaaS, and SaaS are cloud computing services that offer an alternative to on-premise IT solutions (where data, apps, and software run on in-house computer servers). SaaS allows people to use cloud-based web applications. PaaS differs from SaaS in that, rather than providing a single use case to subscribers, it delivers an accessible platform (including things like development tools, database management systems, servers, storage, and networking solutions) that enables. C loud security incidents are skyrocketing. Infrastructure as a service (IaaS) is a cloud computing service model by means of which computing resources are supplied by a cloud services provider. PaaS vs. Software-as-a-Service (SaaS) offerings are becoming the de facto method for users to access services and products like Adobe Creative Suite and Microsoft Office. Although the term usually refers to public cloud computing services such as Software-as-a-Service (SaaS), Infrastructure-as-a-Service (IaaS) or Platform-as-a-Service (PaaS) it can also refer to modernizing an organization’s. Since the cloud is a popular issue for small businesses, large corporations, and everything in between, we’ll explain the fundamental difference between IaaS vs PaaS vs SaaS to assist you in making the best decision. Types of cloud computing. ; SaaS: Perfect for businesses or. Most of the huge organizations prefer to use SaaS applications such as Salesforce and Microsoft Office 365. First, IaaS is an alternative to on-premises infrastructure that encompasses storage, networking, servers, and virtualization services. There are three layers of cloud computing, including Infrastructure-as-a-Service (IaaS), Platform-as-a-Service (PaaS), and Software-as-a-Service (SaaS). The National Institute of Standards and Technology (NIST) recognizes three standard cloud computing models of as-a-service: Infrastructure-as-a-Service (IaaS), Platform-as-a-Service (PaaS), and Software-as-a-Service (SaaS). Analyze and mine data for business analytics. Support, service, updates, and maintenance are provided by the software vendor or partner. This means that organizations may use IaaS long term and apply it to. PaaS vs. Popularity. SaaS is the most popular cloud service that all consumers and businesses use, thus generating the highest revenue in the cloud segment. Some of the best Zendesk alternatives include Intercom, Freshdesk, HelpCrunch, LiveAgent, Kayako, and HelpScout. Key features of SaaS. As a managed service, there is no additional overhead; you can get right to work extracting value from your data store. We will conclude the tutorial by designing a real-world scenario with Infrastructure as a Service (IaaS), Platform as a Service (PaaS), and Software as a Service (SaaS), in multi-cloud environments (private, public, and hybrid). In this context, “basic” is defined in terms of how much control over your. b) In the deployment model, different cloud types are an expression of the manner in which infrastructure is deployed. SaaS. 3% during the indicated period. Within this cloud computing model, there are three primary service models: Infrastructure as a Service (IaaS), Platform as a Service (PaaS), and Software as a Service (SaaS). SaaS vs. IaaS, PaaS, and SaaS are essentially the three main pillars of cloud computing. SaaS provides a complete software solution that you purchase on a pay-as-you-go basis from a cloud service provider. Platform as a service (PaaS), software as a service (SaaS) and information as a service (IaaS) may grow in popularity as more firms use cloud computing to meet their technological demands. Experience with hybrid and cloud implementations. A SaaS approach to, say, web hosting would give you a fully-installed content management system like Wordpress, you just log in and start writing. In fact, nearly half (45%) of all security incidents target cloud-based services. It is a software in which the applications are hosted by a cloud service provider. SaaS, or Software as a Service, is a cloud computing model that provides businesses with access to software applications hosted on the cloud. It includes all the services in a cloud that customers can order over the Internet. SaaS uses the web to deliver applications that are managed by a third-party vendor and whose interface is. On-premises software ("on-prem") is installed and runs on computers on the premises of the organisation using the software, rather than at a remote facility. The IaaS provider hosts and manages this infrastructure. IaaS vs. Figures from Statista show that the three platforms have grown significantly over the last decade, with worldwide revenue increasing from around $90 billion in 2016 to more than $312 billion in 2020. While SaaS vendors deliver software over a secure internet connection, PaaS providers deliver a platform for creating software in a similar fashion. Infrastructure as a service (IaaS) and platform as a service (PaaS) are cloud service models. 1. C loud security incidents are skyrocketing. PaaS: Platform as a Service. Basic layer of cloud computing model. Customization. These three groups comprise the proverbial cloud computing stack. Key differences between cloud IaaS, PaaS, SaaS, and CaaS. Today, SaaS is the leading Cloud computing service, accounting for 39. The graphic below provides a high-level overview. While PaaS and SaaS act as software, IaaS is a cloud-based computing resource.