The best time to plant a tree was 20 years ago. The second best time is now.

 Instead of hiring some back-end and front-end developers, an engineering team can recruit full-stack web developers who can work well with both client and server sides, or separately back-end and front-end developers. Such programmers need to master the latest front-end languages (e.g. React.JS or Angular) and back end technologies (e.g. Ruby on Rails or .NET).  

 The difference between webs and web apps is quite vague. The latter can be understood as apps working on any web servers with higher user interaction, typically Google Apps, Facebook, or Netflix. Some top companies like MobiDev (based in Atlanta, the USA) use prevalent technologies such as PHP, Ruby, Python & Go or JavaScript for website back-end and front-end development.  

 CMS means Content Management System, typically WordPress, Joomla and Drupal. With the support of outsourced development teams, you can easily own a website built on such existing platforms with well visual design, SEO friendliness or additional plugins. It also allows multiple users to manage data by creating, editing or publishing content. 

Static web service is actually less common as it is an only HTML web with fixed content that you hardly update. However, there are still several static web development services you can choose as Nibble Software or Crest Infotech.

Moreover, some companies also offer services based on popular technologies such as:

 PHP is a free open source and also a suitable scripting language for web development, yet often goes with database software like MySQL. It has a variety of frameworks (e.g. Laravel or Zend), libraries and packages. However, PHP also gains notoriety for its inconsistency and seemingly poor design which easily leads to bad codes.

Due to its multipurpose, Python’s popularity exceeds Java counterpart. It has simple syntax, rich ecosystem and a host of web frameworks like Django, Flask, Pyramid, TurboGears and Bottle.  

Java is widespread in many back-end development projects, games and desktop apps. Among Java frameworks, Spring is the most popular open-source one, mostly used to build both web and mobile enterprise apps.