.NET is well suited for any general purpose solution to a business problem, though if we are talking strictly the framework version - you have to be more or less tied to Microsoft Windows to run it. If this isn't a problem, then it will be able to address and solve any programming project you have.
Any small project which you want to have ready in a couple of hours would be probably a bad candidate for using Symfony. Even the most seasoned senior developer can easily spend hours or days creating a small MVP with Symfony. While Symfony's learning curve isn't necessarily bad and will depend a lot on the architectural knowledge of the developer itself, because of the modularity required by Symfony you will need to spend a significant amount of time coding. If you are looking for a quick project, perhaps this framework isn't the best solution. Robust applications can benefit from Symfony's architecture. I have participated in projects on different industries including lead generation, marketing and even some micro-services for other industries which use Symfony. Because of how thorough the framework has been architected, you will have a reliable solution.
Sonata Admin for Symfony is very versatile and we've used it for both the admin part of our website (even created a landing page constructor using it) and for the ERP system we've developed for inside use.
It is easy to learn if you know PHP and the community is quite large so you can easily find experts to help you with issues.
It's good for high-load projects. We have used it for the back-end of a custom affiliate marketing system that currently processes over 180 million requests per day.
.NET is heavily Microsoft Windows oriented, and while .NET core tried to resolve that with MacOS and Linux support, .NET Core is still waiting for wider adoption.
While free for small projects, additional features for big projects can be a little expensive.
Can be resource-heavy upon deployment. We continuously have our more senior staff optimize the code of our junior developers for performance. Other languages are a little bit more forgiving in comparison.
The full .NET Framework is an amazing thing and is very robust. We have used it to create console apps, Windows apps, and online apps. When coupled with Visual Studio, development, testing, building, and deploying our applications has become 100 times easier as compared to doing those things manually before. The automation of this process has helped us push out changes to our applications faster to adapt to the ever-changing business requirements.
You don't often need to reach out to Microsoft for .NET support. If you do, there are forums and websites that have active Microsoft support folks where you can provide feedback or get help. Microsoft support in general is quite good as well, but not cheap. The best support is from the community like StackOverflow.
Symfony has a great following and finding relevant articles or looking into social channels for support is quite easy. I have no comments on any type of official support because I didn't ever need to look into it.
The .NET platform has a much longer and broader history than Laravel, so we chose to go with it as the support will be far superior. Additionally, Laravel is tied to PHP, while you can use multiple different languages in .NET. The additional flexibility that .NET provides in the range of types of applications you can build with it sealed the deal.
Symfony has become such a standard that many frameworks which previously may have been seen as competition, are actually adopting Symfony components to allow them to focus more on what makes their solution unique. Drupal 8 has replaced much of its low-level internal code with Symfony components. Laravel utilizes much from Symfony and builds on it. CakePHP was my preferred framework over Zend and CodeIgniter, but now I typically prefer Symfony or Laravel depending on the type of application and complexity of what I'm doing.
There are few factors we needed for our custom development. Below are each of them. We were able to get a satisfactory outcome for each of these factors which made .NET platform a very good choice in developing enterprise applications.
Reusability of codes- Microsoft has given many re-usable codes and components in the framework to help developers do their job effortlessly. With the help of default features, developers can create end-to-end solutions and make the business operations more efficient. As codes and components are reusable, .NET reduces development time and if applications take less time to develop, they cost cheaper and you get faster return on investment.
Easy to maintain- Development cost is one time, but maintenance cost is incurring. .NET apps are easily maintainable, thanks to the configuration settings that can be modified without any need to rewrite the code.
Deployment is hassle free- Deploying software is always challenging and the most common problem developers face in this process is the existence of multiple DLLs. It’s hard to make sure that all DLLs will co-exist in the same machine. .NET framework solves this problem by allowing different versions of the same DLL to exist side-by-side on the same machine.
Security- .NET is one of the most secure web and application development frameworks available in the market. As it’s made by Microsoft, you can be absolutely sure about the security measurements. Hackers can never steal valuable data from your website or apps.
Cross platform friendly- What if you had developed an app for desktop and laptop computers and now after seeing the growth of mobile apps in the market, you want it in mobile version as well? You can easily develop an app that runs on the desktop and PDA without any issue. As you can re-use the codes and utilize the same development environment, your job becomes a lot simpler.
One negative thing to point out of Symfony is how painful it is to migrate legacy or relatively old projects from previous versions of Symfony into newer versions.
Symfony projects are usually reliable and provide the results you need.
Performance can be an issue sometime depending on the kind of project you are working on. Symfony can have some issues with cache.