IT Support Levels: How L0, L1, L2, L3, L4 Support Tiers Work

The well-known business axiom “Customer is King” effectively summarizes the importance of prioritizing customer satisfaction.

Customers typically hold high expectations for the support team. Responding promptly to their inquiries and swiftly resolving issues can significantly benefit your business. However, achieving this is not always straightforward. It necessitates careful planning to establish an efficient support team structure that consistently delights customers.

Companies with consistently fast, accurate, and well-trained support teams tend to enjoy higher customer satisfaction and are more likely to succeed in the long run compared to those with slow response times, inaccurate information, and a lack of streamlined help desk support processes.

This is where IT Support teams comes into play.

But how do you ensure that your IT support team surpasses customer expectations every time and continues to provide stellar support consistently?

That’s where setting up a multi-tiered IT support model that includes different support tiers catering to different types of customers comes into picture.

Incorporating multi-tiered support for your business can help streamline your support operations to the next level that gets customers in touch with the right IT support levels each time based on the issue type and complexity.

A key advantage of the tiered support model is its ability to deliver faster resolutions for customers.

In this blog post, we will explore the various tiers of IT support, including L0, L1, L2, L3, and L4, and how they differ in terms of scope, responsibilities, and expertise.

For best practices on setting up an effective help desk and improving customer satisfaction, check out our article on help desk best practices.

Technical support, sometimes also known as information technology (IT) support, is a service provided by companies to help and advise users for support in solving a technical problem that occurred with their products or services.

Technical support is essential for businesses and individuals alike, as it ensures that technology is functioning as intended and helps users get the most out of their investments. It can be provided in several different ways, such as by phone, email, video, live chat, chatbots, online tutorials, and much more.

Many technical support teams are organized into tiers. Tiers represent different support expertise levels. Having different levels of tiers allows them to service varying customer issues more quickly and effectively.

Generally, companies start with a single-tier technical support system. Your technical support team initially might be very small and might have just a single point of contact to handle all customer-related queries. However, as a company grows and becomes bigger in size, you must have tiered help desk infrastructure as a fundamental practice.

Ultimately, technical support is about empowering users with the knowledge and tools they need to overcome technical challenges and keep their systems running smoothly.

What are IT Support Tiers or IT Support Levels?

IT Support Tiers or IT Support Levels refers to organizing your support team into different levels based on their levels of expertise to effectively handle incoming support issues. By implementing the right combination of support technicians at each level, filtering your customer support through different tiers proves useful for numerous reasons as it:

  • Strategically addresses customer requirements
  • Creates fantastic customer service experience
  • Empowers customers to be self-sufficient whenever possible
  • Quickly resolves small, repeated, or easy-to-manage customer issues
  • Establishes a timeline and protocol for complex issues
  • Improves employee training and confidence levels while addressing issues
  • Allows opportunities for feedback and suggestions for continued product development

Five levels of IT Support

Breaking customer service into different levels of support tiers allows you to bring into play the best member of the support team. A multi-tiered help desk infrastructure is critical because the issues vary so much in terms of complexity. The support varies in terms of complexity, hence the division into different help desk levels or tiers.

Let’s take a look at some examples of the best practices for implementing the five help desk levels in detail below:

Tier 0 or Level 0 Support

Tier 0 or Level 0 IT support is the first tier of support that customers will interact with is self-service or automated machine interactive level. Tier 0 is the most basic level of technical support provided to end-users.

This tier typically consists of self-service options, such as knowledge base articles, frequently asked questions (FAQs), and user manuals, that allow users to troubleshoot and resolve common issues on their own without requiring assistance from support agents.

On this level, there is little or zero scope for customer-to-employee interaction while receiving support.


  • Providing some kind of user-retrievable information
  • Incorporating Self-Help Service Desk


  • Users can retrieve the required support information from mobile and web pages or apps that include blog posts, FAQs, detailed information about products, search, and manual functions.
  • Users use the mobile app to access the service catalog where they can request and receive service without involving the IT staff.
  • Email, web forms, and social contact methods such as Twitter, LinkedIn, etc., are used to reach higher IT support levels or company personnel.
  • Users are allowed to crowdsource solutions usually without input from company personnel through customer forums.

IT Support Staffing Requirement

  • Tier 0 support requires specific technical and marketing resources to be created, maintained, and updated as and when required.
  • A development team is needed to create a web portal or mobile app.
  • Moderator roles can be assigned to a few staff, to monitor customer forums or social profiles.
  • New requests received from Tier-0 can be assigned to the Tier-1 support desk for further processing if self-service is insufficient.

Tier 1 or Level 1 Support

Tier 1 or Level 1 IT support represents a very basic level of support service offered by a company to its customers. This level of support typically handles simple issues like software installations, password resets, and basic troubleshooting. 

This support level is usually provided by IT personnel having least experience, lower understanding of technical issues, and limited access to company data.


  • Logs, prioritizes, tracks, routes, categorizes incidents reported by clients.
  • Records user requests and data
  • Monitoring server notifications
  • Attending user’s phone calls and resolve issues encountered with hardware/software
  • Replying to client emails
  • Fix logging issues faced by the user
  • Conduct basic MS Office and Google Suite troubleshooting
  • Reinstalling basic applications
  • Create tickets for Level 2 support
  • Solve frequently occurring problems such as username and passwords issues, aid users in the use of hardware and software, and set-up issues
  • Troubleshooting Printer related issues


  • Tier 1 support receives requests from customers via channels like phone calls, email, web forms, chat, and more. This is often the tier that first interacts with customer questions, so it is important that those in charge of providing assistance are ready to fix these issues and track support tickets until the issue is completely resolved.
  • The issues it deals with are very basic, such as solving usage issues, providing details about a product, and fulfilling service desk requests which require IT involvement.
  • In case no solution is available and requires more technical help, Tier 1 personnel will typically delegate the issue to Tier 2 support and follow the required escalation procedure.

IT Support Staffing Requirement

Tier 1 staff require only a basic level of technical knowledge. They are given sufficient training on the job to resolve common issues faced by the customer by following a documented standard operating procedure (SOP) or scripts.

Tier 2 or Level 2 Support

Tier 2, also known as Level 2 support, provides more advanced technical assistance to end-users who require in-depth troubleshooting of their hardware or software products.

This level of support deals with more complex issues or challenges that could not be solved by the Tier 1 personnel. They usually comprise experienced agents, who have an extensive knowledge of the company’s hardware and software products than the Tier 1 support agents, thus making sure that the issues that level 1 IT Support operators escalated are dealt with accordingly and in the right manner.

Level 2 support technicians provide in-depth troubleshooting, technical analysis, and backend analysis.

Tier 2 personnel also have more access to all the important company information.


  • Extensive technical support
  • Represents a part of ITIL Technical Management function
  • Follows incident management activities
  • Provide training whenever it is needed for employees and staff
  • Handle complex issues like billing and refunds


  • They work in a backend capacity and have no direct communication with the customers.
  • Tier 2 personnel have more experience, and they are skilled technicians.
  • They assess incidents and provide solutions to the issues that can’t be handled by a Tier 1 support team.
  • If Tier 2 support tier fails to provide any solution, then the issue is escalated to Tier 3 support tier.

IT Support Staffing Requirement

This level requires support personnel to have deep knowledge and a thorough understanding of the product or service. They may or may not necessarily be the programmers or engineers who designed and developed the service/product, but they should have decent knowledge and experience on the specified product/service to handle all types of customer issues.

Tier 3 or Level 3 Support

Tier 3 support level represents the highest level in terms of IT Support and this level consists of SMEs (Subject Matter Experts) who are well accomplished with the product or service for which the company is offering support.

This level of support handles the most complex and challenging issues that require extensive technical knowledge and expertise.

Tier 3 usually helps a small percentage of customers who are either high-value customers or customers experiencing strange technical issues that don’t happen generally. They can provide solutions for a wide variety of technical problems.


  • Represents the expert level of the Technical Management Function
  • Provide a top level of support for products or services
  • Keep a watch for continuous product/service improvement opportunities
  • Communicate client perspective to product and development teams for feature improvements


  • Tier 3 support groups have access to the highest level of company and product information for solving an issue or creating a new feature.
  • They attempt to create a replica of the problem to determine the root cause, by looking into code and designs in a lab setting. On identifying the root cause, the company decides if the new fix is required or not. The new fixes are then documented and communicated to Tier-1 and Tier-2 agents as a future reference.
  • If the fix involves a major improvement, the problem is then escalated to Tier 4 support.

IT Support Staffing Requirement

Tier 3 specialists typically have the highest level of skills and often they are known as product specialists. This group may include the actual creators, chief architects, or engineers who designed and developed the product or service.

Tier 4 or Level 4 Support

Tier 4 comes into the picture when the services get outsourced by a parent organization. This support tier is all about outside technical support provided but not supported by the company.


Outside support for problems that are not supported by the organization.


This level provides outsourced support for components or products that are not directly serviced by the company. The issues forwarded to Tier 4 are monitored by the companies until it’s completely resolved. Some of the examples include printer support, machine maintenance, vendor software support, and more.

IT support staffing requirement

Preferred suppliers and business partners providing support and services for items provided by your company.

How Desk365 can be used to manage different levels of your IT support team?

As an IT helpdesk solution, customers frequently ask about the various approaches to IT Support and how they can use Desk365 to organize their support team into different tiers.

Here’s how Desk365 special features enable your business to provide stellar support to your customers.

Let’s see them in detail below:

1. Groups

You have the ability to create multiple groups in Desk365 and add the appropriate support agent to the group he must belong to according to his expertise. The best option is to have three groups: L1, L2, and L3 with the right support staff in each group.

IT support levels in groups

2. Roles

Roles are used to shape how your support team members can access Desk365. For example, you may want L1 members to have access only for basic tickets, view the remaining tickets, add notes to them, as well as escalate them to L2 and L3 whereas higher level support tiers can have access to complex tickets which are critical for your business.

To achieve this, Desk365 enables you to create a custom role tailored to your specific requirements.

L1 Support level
L1 support tier features

3. Automation

Set up advanced automation rules in such a way that high priority tickets, complex issues, and issues flagged by your high value customers directly go to the higher support level tiers for immediate action and resolution.

IT support levels in automation
it support levels

4. Knowledge Base in Support Portal

Create an extensive knowledge base covering solutions to the frequently asked questions from your customers. The aim is to automate as many support functions as possible in Tier 0 itself where end users can quickly and easily find solutions on their own without the need to reach out to your support agents.

knowledge base in Desk365

5. SLAs

Set up SLAs to provide the best customer support to your customers and resolve their queries quickly. Having an escalation process helps in escalating issues to the higher support tiers if the lower support tier could not identify the issue and solve it within the required amount of time.

IT Support levels in SLA
IT Support Levels in SLA

6. APIs

If you’re providing Level 1 and Level 2 support using Desk365 and using a different third-party solution like Service Now (for an example) for providing Level 3 support, you can leverage Desk365’s APIs and connectors to integrate with Service Now and pull the level 1 and level 2 tickets directly into Service Now.

IT Support Levels in API

7. Closure Rules

The Closure rules are crucial in directing agents, establishing specific criteria that must be satisfied before designating a ticket as resolved or closed. These regulations contribute to upholding the standard of customer support provided by your L1 and L2 support teams, guaranteeing the completion of all essential tasks before concluding or resolving a ticket.

Closure rules

Is tiered technical support necessary for you?

When it comes to technical support, one of the key decisions that organizations need to make is whether to implement a tiered support model or not.

IT Service Management (ITSM) is a framework that helps organizations manage their IT services and align them with the needs of their business and customers. IT Service Management (ITSM) highly recommends every organization to have tiered IT support.

However, implementing a tiered support model can also be challenging, requiring significant investments in training, technology, and personnel and it is not compulsory to implement all these different support levels for your business.

The goal is to automate as many support functions as possible in Tier 0 itself where users can quickly and easily find solutions on their own without depending on the IT personnel’s help. This saves highly skilled resources for creating new solutions, fixing difficult problems, and reduces the overall support operational cost for your business.

Ultimately, the decision of whether to implement a tiered support model depends on the unique needs and circumstances of your organization. While tiered support can offer significant benefits, it’s important to carefully evaluate the costs and resources required to implement it and determine if it aligns with your organization’s goals and priorities.

Trends for Tired Technical Support

As technology continues to evolve, so do the trends in tiered technical support. Some of the popular trends we are seeing include:

1. Omnichannel Support: Today’s customers expect to receive support through multiple channels, including phone, email, live chat, social media, and more. A tiered support system that integrates these channels can provide a seamless and efficient support experience, resulting in faster resolutions for customer issues.

2. Automation: Chatbots and other forms of automation can help businesses handle routine enquiries quickly and efficiently, freeing up human agents to focus on more complex issues.

3. Self-Service: Many customers prefer to solve problems on their own, and a tiered support system that includes self-service options such as knowledge bases and FAQs can help them do so.

4. Data-Driven Support: By collecting and analyzing data about customer interactions, businesses can identify patterns and trends and optimize their support processes accordingly.

5. Integration: Incorporating compatibility with various third-party applications, which can synchronize diverse support levels operating in different applications, can be advantageous.

These trends in tiered technical support are geared towards providing faster, more efficient, and more personalized solutions to customers.

On the whole, integrating a Tired technical support system into your organization can expedite the resolution of customer issues. Categorizing the priority of each issue and assigning them to the appropriate support group can prove to be an effective and efficient method for addressing and resolving customer concerns.

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