Bitrix24 is a solution for business communications and collaboration introduced for organizations of any size. The system unites tools classically belonging to corporate intranets with CRM, project management and social collaboration elements to form an optimal virtual work platform. Bitrix24 can be used as an online service (Cloud version, SaaS) and as a ‘box’ product (Self-hosted version, i.e. installed on your own server). 

Bitrix24 Cloud version

Cloud technologies are very popular at the moment, they provide flexible data management, and 24/7 access from anywhere where you can get connected to the Internet. Bitrix24 Cloud version could be an optimal solution if you have 1-100 employees. Selected commercial subscriptions provide an unlimited number of user accounts for both the intranet (employees and management) and the extranet (partners and clients). If you eventually need a higher level of product customization, corporate branding and/or integration with other enterprise software, you can migrate your Bitrix24 Cloud account to the Self-Hosted version at any point. 

Bitrix24 Self-hosted (On premise) version

There are several instances when on premise Bitrix24 editions have to be used instead of cloud - when law requires that data has to be stored in a specific location, when you need source code access, when you need Bitrix24 tools that aren't available in cloud or when you don't want to use cloud services due to internal policies.  Feature-wise, the Self-hosted version includes more tools and modules compared to the Cloud version. Depending on your  business nature, company size, and requirements for an intranet solution, you can choose between the flexible Cloud subscription plans, or develop a custom intranet project using the Self-hosted version. Both versions have their benefits and trade-offs associated with deployment and maintenance. Below, please find a quick overview of core differences between the Cloud and Self-hosted product version: 

Pricing & Licensing  

Cloud	Self-hosted
"Pay-as-you-go" subscription options	Subscription license
Bitrix24 Cloud is SaaS (software as a service), licensed on a subscription basis	Subscription license for 12 months with mandatory renewal
Free plan with unlimited number of users is available.	Licenses are available for packages of 50-100-250-500 users, as well as an extension for the Enterprise license for every 1000 users.

Installation & Deployment 

Cloud	Self-hosted
Quick start, no installation or ongoing maintenance	Installation and deployment on a web server of your choice
Instant web browser or mobile app access	Requires corresponding hardware and software infrastructure
Online storage space limit is set according to the subscription option	Unlimited disk storage space (depends on your hosting provider's capacity and plans)

Product Customization

Cloud	Self-hosted
Custom logo (available in selected subscriptions)	Custom logo
Custom domain name (available in selected subscriptions)	Custom domain name
REST API	REST API, API
n/a	Custom authorization page (welcome page)
n/a	Custom color schemes and templates (CSS, HTML, PHP, Javascript)
n/a	Custom layouts, custom menus
n/a	Full source code availability
n/a	Full front-end access
n/a	Full back-end access
n/a	Complete module, structure, and contents management
n/a	Advanced set of administrative tools
Only 18 localization languages available	Localization tools (product can be translated into any language)

Enterprise Level Integration

Cloud	Self-hosted
Pre-set access rights and permissions	Flexible access rights and permissions for User Groups and individual users
n/a	LDAP / Active Directory
n/a	NTLM authentication / SSO
n/a	MS Exchange (Calendars)
n/a	MS SharePoint (Lists)

Back-Ups

Cloud	Self-hosted
Automatic daily back-ups for Cloud accounts	Manually scheduled backups
Back-up restore procedure (available only with a commercial subscription)	Cloud storage option for backups
n/a	Built-in back-up / restore tools

Security & Safety

Cloud	Self-hosted
Accessible only through SSL-protocol	Security measures and access procedures can be adjusted manually
Proactive filter WAF (Web Application Firewall)	Proactive filter WAF (Web Application Firewall)
Several independent data centers providing 24/7 online service availability	n/a
n/a	Built-in security tools with a full access at the back-end of your product copy

Product Features & Tools

Cloud	Self-hosted
Set of features defined by subscription plan	Set of features defined by product edition
n/a	Additional HelpDesk tools
n/a	Additional e-Learning tools
n/a	Additional CMS tools
n/a	Additional security tools
n/a	Additional scalability tools

Mobile & Desktop Apps

Cloud	Self-hosted
Free Mobile App	Free Mobile App (with a partial front-end custom view support)
Free Desktop App	Free Desktop App

Bitrix24 Cloud and Self-hosted versions are priced and licenses using different models, hence each product version is associated with different costs. Here’s how those costs are considered from the point of view of the end-user:

Costs associated with Bitrix24 Cloud version: 

• Basic hardware assets (workstation / laptop / mobile device that can provide access to the Web); 
• Internet access (various options provided by ISPs or mobile carriers); 
• Monthly (semiannual or annual) fees for a Bitrix24 subscription option; 
• Additional training and maintenance may be involved (usually paid services provided by a Bitrix Partner). 

Costs associated with Bitrix24 Self-hosted version: 

• Hardware and software for local networks (ranges from $ 2,990 and up); 
• Hosting services for remote installation; 
• Commercial license key for a Bitrix24 Self-hosted version + additional user licenses (if more than 25 users are required); 
• Salary for outsourced or in-house IT-staff for project implementation and maintenance (depends on many factors; can be a one-time payment for a turn-key intranet solution developed by a Bitrix Partner, or can involve hourly payments for the services provided by IT-specialists).