Cloud service selection of enterprises: comparative analysis of SaaS, PAAS and IAAs

First, compare them in a relatively simple way .

Now , Cloud services are more important . Almost every enterprise needs to use cloud computing services . Managing large amounts of sensitive and confidential data becomes difficult . therefore , Using cloud services in any type of enterprise is inevitable .

However , What kind of cloud service to use has gradually become a major problem for enterprises . generally speaking , Enterprises have three cloud computing service modes to choose from . Software as a service (SaaS), This is a complete software application , With user interface ; Platform as a service (PaaS), A platform where developers can deploy their own applications ; Infrastructure as a service (IaaS), Provide machines 、 Storage and network resources , Developers can install their own operating system 、 Applications and support resources to manage .

All of these services have their advantages and limitations . therefore , It is necessary to understand the main differences between them .

1、 What is? SaaS( Software as a service )

SaaS Is a solution model , Users use web browsers to access cloud software , The software contains not only programs , It also contains user data . It uploads software to the cloud for users to use . Cloud services may require a monthly subscription fee or an annual fee .SaaS No need to download and run applications on the local server . When a user logs in to their account online , All content is available via the Internet . Users can usually access the software from any device at any time ( As long as there is an Internet connection ).

SaaS Delivery of via the Internet , The third party supplier is responsible for handling . Most applications run directly on Web browsers . therefore , The client does not need to download or install locally . Third party vendors are responsible for handling applications . Maintenance and support become easy for enterprises , This is very helpful for them .

1) advantage

Users can easily use the software on multiple devices , Without having to install them , And it can be easily managed from a central point .SaaS Applications can be from anywhere 、 Access... On any device .

It saves time and money on challenging tasks . These tasks include upgrading 、 Installation and management .

Users no longer need to hire IT Experts download software to multiple computers throughout the office , And no longer worry about keeping the software on each computer up to date . All this is handled in the cloud .

2) Shortcomings and limitations

Data security is the use of SaaS One of the major limitations of the service . Transfer data to cloud based public SaaS Services can cause security problems .

Integrating existing applications with new updates can also be a major problem , Because some suppliers may not be able to provide comfortable integrated systems .

Because the third-party provider will handle the user's Application , Their maintenance downtime and network attacks or network problems may affect users' software performance .

SaaS Provider example ：Dropbox、SAP Concur、Salesforce、Cisco WebEx、GoToMeeting、Oracle

3)SaaS related data

• 38% The company said , They are almost entirely SaaS Up operation
• 80% Our business plans to 2025 Make all its systems SaaS
• To 2023 year , Of companies of all sizes SaaS Expenditure will reach 5000 Billion dollars
• 86% Use SaaS The participation of employees in the enterprises is relatively high
• In terms of adoption , North America is the most mature SaaS market
• 99% Enterprise lease of uses one SaaS Solution

2、 What is? PaaS( Platform as a service )

PaaS Provides a framework for developers . They can build and customize applications there . This means that developers do not need to start from scratch when creating applications , Writing a lot of code for them saves a lot of time ( And money ). Use PaaS, The server 、 Storage and networking are managed by third-party vendors . meanwhile , Developers do their own maintenance and application management .

PaaS Allow users to use PaaS Create an application using the software components available in . The software passes PaaS Development , Inherited cloud capabilities . This feature makes the application highly scalable , And available on multiple devices .

1) advantage

It's cost-effective , Extensibility , And can easily migrate to a hybrid model .

PaaS Allow developers to focus on the creative aspects of application development , Instead of managing trivial tasks such as software updates or security patches . All their time and energy will be devoted to creating 、 Testing and deploying applications .

Start developing immediately with the services and resources of the cloud provider , To speed up time to market .

2) Shortcomings and limitations

Basic coding knowledge is essential to make full use of PaaS Platform critical

Control over the application depends on the platform . For example, in case of power failure , The user's software may also be affected

It reduces customer control and flexibility

Something like SaaS Solutions to the same data security and integration issues

PaaS Provider example ：PaaS A good example of this is AWS Elastic. Users only need to upload and maintain their applications . Examples include Google App Engine、Heroku Applications 、Windows Azure、Force.com、OpenShift、Apache Stratos.

3、 What is? IaaS( Infrastructure as a service )

It basically conforms to the pay as you go thinking mode . Users need to pay for the services they use , Such as network 、 Storage or virtualization . The supplier or service provider only manages servers and warehouses . Users must handle everything from the operating system to the virtual machine . It basically provides users with an alternative cloud based local infrastructure , So companies can avoid investing in expensive on-site resources .

About Iaas Solution , Developers must install their own operating system 、 Database management software and support software . also , Developers or corporate system administrators must manage both hardware and software .

IaaS adopt API Or the dashboard provides cloud servers for users . such , Customers can control the entire infrastructure . Users have direct access to servers and storage . Enterprises that need full control of their applications or applications that need rapid integration or upgrade should use IaaS platform . Besides , Companies that only want to pay for the services they use are also eligible to use it .

1) advantage

It's cost-effective , Because users only need to pay for the services they use . Besides , Users only need to spend time on the server 、 Storage and network . Users can buy what they need according to their needs , And buy more as the business grows .

It has good scalability . Users can upgrade and upgrade existing software and applications on a large scale .

Users have complete control over their infrastructure .

2) Shortcomings and limitations

Use IaaS The cost of depends on how many services the user uses , therefore , in the majority of cases , Prices are unpredictable .

Since most of the control is in the hands of the customer , Team members must also perform the most tedious tasks .

Enterprises may need to provide additional training for their teams , To help them better manage their infrastructure .

IaaS Provider example ：AWS EC2 yes IaaS A good example of .EC2 The user does not own a physical server ,AWS Provide virtual servers . Other examples are Google Compute Engine、Rackspace、Cisco Metacloud、Linode、DigitalOcean.

4、 summary

Each cloud model provides specific features and functions , For enterprises , It is important to understand these differences .

IaaS Provide users with maximum flexibility in hosting custom applications , And provide a common data center for data storage .

PaaS Usually built on IaaS Above the platform , To reduce the need for system management . It allows users to focus on application development , Not infrastructure management .

SaaS Provide out of the box solutions , To meet specific business needs such as websites or email . Most modern SaaS The platforms are built on IaaS or PaaS On the platform .

Depending on the size and complexity of the business , Enterprises can choose a cloud computing service model .IaaS、PaaS and SaaS The increasing popularity of reduces the need for internal hosting . No matter which option the enterprise chooses , Moving to the cloud is the future of its business and technology .