APM Background
The end result common to Digital Transformation (DX) projects is mostly applications. From the user’s point of view, it is seen as a service, and from the IT’s point of view, it is managed as an application running on top of the infrastructure.
Users’ satisfaction with the site depends on whether the application’s response time is fast or slow, which in turn translates into business outcomes.
Monitoring that your infrastructure and applications are functioning properly is important to keep your systems up and running reliably while ensuring quality of service.
Especially for companies that provide applications as a service, it is essential to maintain application performance in order to increase user satisfaction.

Increase in APM demand due to MSA, DevOps, SRE, etc.
Systems and applications can be said to be a more important field due to various IT technology challenges such as web system diversification, cloud migration, microservices, DevOps, and SRE.
On the other hand, the difficulty of managing the system due to the diversification or complexity of the environment due to MSA and the increase of servers in the cloud environment is increasing.
“They say the system is slow, but it gets more and more difficult to find out where the cause is.”
If you use APM, which can visualize the state in an environment operating across multiple applications, it is possible to monitor performance and identify causes of failure in linkage between systems, including the cloud, which has recently become more complex.

APM expected effect
1. Business side
Increase revenue and sales
Every organization has important services that are directly or indirectly linked to its brand image or bottom line. Problems with these applications can have a serious impact on your overall business.
Application performance management tools can reduce the mean time to resolution or MTTR of incidents, providing significant revenue benefits. Detecting and resolving issues quickly improves customer experience and increases sales.

Prevent customer churn
According to research by Google, a 0.5 second slowdown in page display reduces the number of accesses by 20%. Additionally, a study by Compuware found that 30% of users access a competitor’s site when a website is having problems.
Users are sensitive to the “slowness” of the system and immediately leave the site as well as go to another competitor site. This can be fatal for web services and EC sites.
It is important that services and systems where users churn are immediately improved and prevent user loss.

Ensure business continuity
Applications are the backbone of any business. Downtime for business-critical applications has a huge impact on organizations through lost revenue, damaged brand, lost productivity, and compliance-related impacts.

Improved end user experience
It not only enhances the end-user experience by improving the overall quality of applications, but also makes business-level interactions for both internal and external users more productive. – Jonah Kowall, Research VP, Gartner
Satisfying the end user is always a priority. APM is an essential solution for customer satisfaction.

lower operating costs
Adoption of cloud-native architecture is increasing in order to improve agility and secure operational flexibility.
However, due to the increase in the number of configuration changes or the decentralization and complexity of the system configuration, monitoring costs cannot but increase with the existing operation method. Adopting an APM solution can significantly reduce costs.

2. Operational aspects
Provide stable service
Detect bottlenecks in the entire service before they affect the service. In addition, when a failure occurs, it is possible to quickly identify the cause of failure.

All transaction performance monitoring
Its most basic function is to track the performance of all transactions generated by the application. You can use APM tools to determine which applications are called most frequently, which are running slowly, and which applications need improvement.

Rapid Failure Response
The problem was that the technology managing each component of the system seemed to work just fine, making it difficult to understand what was causing the slowdown.
APM allows monitoring from systems to applications. When a problem occurs, it becomes easier to identify the cause because you can think of the cause that acted as a trigger and group each component together.

Contribute to service advancement
Systems that change dynamically as a result of system enhancements, tuning, and redesign require ongoing performance management.

Reduce the burden associated with application monitoring
Reduce operator burden by visualizing application operation status.

summary
It is important that the server or network operate normally, but the most important thing is that the software or application running on the server operate normally.
By using APM, which can visualize the state in an environment operating across multiple applications, it is possible to monitor performance and identify causes of failure in linkage between systems, including the cloud, which has recently become more complex.