Updating a server, modifying a firewall rule or renewing a certificate may seem like a routine task. However, an apparently simple change can interrupt an application, leave an office without connectivity or prevent employees from accessing essential tools.
The problem is not usually the change itself. The risk arises when it is carried out without assessing its consequences, documenting the previous configuration or having a procedure to revert to the former state if something goes wrong.
Technology change management helps organise these interventions to reduce errors, control risks and protect operational continuity. It is not a methodology reserved for large corporations. Any company can implement a straightforward process that is proportionate to its infrastructure.
Why can a simple modification cause an incident?
Business infrastructures consist of numerous interconnected elements. A change applied to one component can affect other systems that may not appear to be related at first glance.
For example, changing an IP address can affect an application that uses that address directly. Updating a server may cause legacy software to stop working. A new firewall rule can block a supplier’s access or interrupt a connection between offices.
The most common causes of incidents related to technology changes include:
- Failing to identify all the dependencies of the affected system.
- Making changes directly in the production environment.
- Not having a copy of the previous configuration.
- Applying several modifications at the same time.
- Failing to check compatibility between versions.
- Carrying out the intervention without informing affected users.
- Not monitoring system performance after the change.
- Not having a tested rollback plan.
Maintaining an up-to-date inventory of technology assets helps identify which devices, applications and services may be affected before a modification is made.
Which technology changes should be controlled?
Not every modification carries the same level of risk. Changing a workstation background does not require the same procedure as updating a server that hosts the company’s business management system.
However, it is advisable to record any intervention that may affect the security, availability, connectivity or operation of a service used by the company.
System and application updates
Updates correct vulnerabilities and errors, but they can also introduce incompatibilities. Before installing them, it is advisable to review the requirements, dependencies and the possibility of restoring the previous version.
This control is especially important for servers, hypervisors, databases, management applications, operating systems and platforms used by several departments.
Network and communications changes
Changing a VLAN, a route, an IP address, a DNS server or a switch configuration can affect many users and devices.
In these cases, it is advisable to keep a copy of the configuration, record the previous values and test critical communications after the intervention.
Firewall and remote access modifications
Opening a port, creating a VPN or modifying an access rule may solve an operational requirement, but it can also increase the company’s exposure to threats.
These modifications should include a justification, an owner, a review date and, where appropriate, an expiry date. Temporary rules should not remain active indefinitely.
Permission and cloud service changes
Assigning administrative permissions, modifying user groups or changing access policies can affect both security and productivity.
In environments such as Microsoft 365, SaaS platforms or virtual desktops, it is important to record who requested the change, what access is granted and how long it will be required.
Certificate renewal
Digital certificates are used on websites, VPN connections, mail servers and business applications. An incorrectly implemented renewal can prevent access to these services.
In addition to monitoring the expiry date, companies should check which systems use the certificate, the format in which it must be installed and whether any applications need to be restarted.
Backup and recovery changes
Changing a backup policy, excluding a folder or changing the storage destination can leave important data unprotected.
Any change related to backups should be followed by verification. It is not enough to confirm that the task completed successfully: the company must also ensure that the information can be recovered.
What should a technology change request include?
A company does not need to implement a bureaucratic procedure to control its changes. A simple template can collect the necessary information and prevent each technician from following a different approach.
Before implementing a significant modification, at least the following details should be recorded:
- Change description: which element will be modified and what the new configuration will be.
- Reason: which problem it solves or which improvement it is intended to achieve.
- Affected systems: servers, applications, users, offices or suppliers involved.
- Risk level: likelihood of failure and consequences for the business.
- Owner: the person or provider responsible for implementing and validating the intervention.
- Maintenance window: planned date, time and duration.
- Pre-change tests: checks carried out before implementing the change.
- Communication plan: users or managers who need to be informed.
- Rollback plan: steps required to restore the previous state.
- Post-change validation: tests that will confirm that the service is working correctly.
This information should also be added to the company’s documentation. In our article on business technology documentation, we explain why systems should not depend on the exclusive knowledge of one person.
What is a rollback plan and why is it essential?
A rollback plan defines how to restore the previous configuration when a change does not work correctly.
It should not be improvised after a problem appears. It must be prepared before the intervention begins and should be executable within a reasonable period.
Depending on the type of change, the plan may involve:
- Restoring a firewall or switch configuration backup.
- Returning to an earlier version of an application.
- Recovering a virtual machine from a snapshot.
- Uninstalling a problematic update.
- Restoring a database.
- Reactivating a previous rule, route or service.
- Recovering files from a backup.
It is also necessary to define when the rollback should begin. If the change cannot be validated, exceeds the planned maintenance window or affects a critical process, continuing to make adjustments may make the incident worse.
How to classify changes according to their risk level
Classifying changes helps companies apply a proportionate level of control. Routine interventions do not require the same process as a full migration or the replacement of a central firewall.
Standard changes
These are frequent, well-known and low-risk interventions. They follow a documented procedure and have been carried out previously with predictable results.
Examples include creating an account using an approved template or installing a validated corporate application.
Normal changes
These require prior assessment because they may affect several systems or users. They should be planned, approved and implemented within a maintenance window.
A firmware update, network modification or application migration would normally fall into this category.
Emergency changes
These are carried out to address a critical vulnerability, an outage or a situation that cannot wait for the standard procedure.
Urgency does not remove the need for documentation. Even when the record is completed after the service has been stabilised, it should state what was changed, who authorised it and what the outcome was.
A practical process for implementing a change safely
A clear procedure helps reduce errors without unnecessarily slowing down maintenance work. It can be adapted to the size and needs of each organisation.
- Identify the requirement. Determine what needs to be changed and why.
- Assess the impact. Review dependencies, affected users and potential risks.
- Prepare backups. Save previous configurations, data or system states.
- Define the tests. Establish how the organisation will confirm that the outcome is correct.
- Plan the rollback. Document the steps and time required to restore the former state.
- Communicate the intervention. Inform managers and affected users.
- Implement the change. Follow the procedure without introducing additional modifications.
- Validate the service. Check connectivity, applications, security and performance.
- Monitor the system. Supervise it for an appropriate period after the intervention.
- Update the documentation. Record the new configuration and close the change.
The importance of monitoring after a change
The fact that an application opens correctly immediately after an update does not mean that the change has been completed successfully. Some problems only appear when the workload increases, a scheduled task runs or a user with different permissions accesses the system.
After the intervention, companies should monitor indicators such as resource usage, error logs, communications between systems, security alerts and performance as experienced by users.
Business monitoring and IT maintenance make it possible to detect deviations before they become serious disruptions.
Mistakes a company should avoid
Many problems related to technology changes occur repeatedly because there is no shared approach for planning and documenting them.
- Making significant changes without a previous backup.
- Relying on the memory of the technician who carried out the intervention.
- Failing to inform the owners of the affected services.
- Confusing a maintenance window with unlimited downtime.
- Applying updates without reviewing requirements or compatibility.
- Modifying several components simultaneously.
- Failing to document urgent changes once the incident has been resolved.
- Not checking the service from the user’s perspective.
Companies should also avoid turning the procedure into an excessively complex barrier. The objective is to improve control, not to accumulate forms that nobody reviews.
Change management for companies without a large technology department
A medium-sized company can implement effective change management without having a team dedicated exclusively to this function.
It is enough to define responsibilities, use a shared template, keep documentation up to date and establish which modifications require approval.
When system management is outsourced, the technology provider should record interventions, communicate risks and maintain a history that is accessible to the client.
At Inmove IT Solutions, we help companies manage servers, networks, applications, communications and cloud services through procedures adapted to the criticality of each environment. Our business systems management solutions combine maintenance, monitoring, support and documentation.
Conclusion: change is necessary, improvisation is not
Technology infrastructures need to evolve. Systems must be updated, vulnerabilities corrected, equipment renewed and new solutions introduced.
Risk is not eliminated by avoiding changes, but by carrying them out with information, planning and recovery capability.
A straightforward technology change management process makes it possible to know what is being modified, who has authorised it, which services may be affected and how the previous state will be restored if something goes wrong.
This control reduces disruptions, simplifies incident resolution and prevents a routine update from affecting the entire company.
Speak to our team
A well-managed infrastructure should not only work today. It should also be able to evolve without introducing unnecessary risks or avoidable disruptions.
Contact Inmove IT Solutions to discuss how to organise, document and monitor technology changes in your company.
Frequently asked questions about technology change management
These are some of the most common questions companies have when establishing a procedure for controlling modifications to their systems.
What is technology change management?
It is the process used to plan, approve, implement, verify and document modifications made to servers, networks, applications, cloud services and other business systems.
Does every change require approval?
Not necessarily. Routine and documented changes may be pre-approved. Modifications that affect security, availability or critical processes should be reviewed before they are implemented.
What is the difference between a backup and a rollback plan?
A backup protects data or configurations. A rollback plan explains how those resources will be used and which steps must be followed to restore the previous operating state.
When should a technology change be carried out?
Changes with a potential impact should be implemented within an agreed maintenance window, at a time that minimises disruption and ensures that the necessary staff are available to validate or reverse the intervention.
What should be checked after an update?
The company should verify the operation of the modified service, its dependencies, user access, communications, error logs, performance and monitoring alerts.
How can an IT maintenance provider help?
A specialist provider can assess risks, prepare backups, document configurations, implement interventions, monitor systems and apply a recovery plan if the change causes an incident.
