Every microservice or web service connects to a separate data source.

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Fail-Safety
Both web services and microservices solutions promote fail-safety management in business applications without any form of downtime in performance. They are the best replacements for the monolithic app structure as they function separately, yet with an interconnected set of components.

The simultaneous use of an application’s multiple features means that its structure can execute several user requests. This can lead to an app crashing if there is heavy traffic of active users.

A request may be handled by a single microservice china mobile database or a handful of collaborating microservices. Moreover, since each microservice has its own database, the load of the system can be evenly distributed across different databases. Although web services provide a neutral point of balance between scaling accessibility and fail-safety level microservices scale much better.

Customization
Customization of initial monolithic software structure is also a factor even if you decide to decentralize it. There is always a challenge with some components that can be made into microservices. These components will not work independently inside an existing functionality. It is better to reprogram them from scratch. This is why such components provided as web services is a complex but better solution.