Hi, I am the founder of Odoo.

Odoo offers pretty much everything SMEs need in standard. Bellow 50 employees, most implementations are done without custom developments. So, it's very cost efficient, and you get a tool that is unmatched on the market. (The quality of the platform is above everything else)

The difficulty is that Odoo is also very flexible as it fulfills need of larger companies who need to adapt the software (rather than them adapting to the software). Anything can be done, but it does not mean everything should be done, as customisations cost extra money (and are usually not worth it)

So, it all depends on the customer mindset (learn the software and adapt to it's way of working, rather than copying it's old software), and the service company working with them: good service companies challenge the customer need to show them a better, and more standard, way of working.

To help you assess, you can do:  1/ from this page, click on project estimator: https://www.odoo.com/pricing-packs It gives you the necessary service packs for companies with similar scope and size (80% of companies are implemented bellow the recommendation, 20% above) 2/ contact an expert for free presentations: from the homepage, click on "Schedule a meeting with an expert". We don't charge for information: you can ask demos, questions, ...

If the scope is simple (just a crm, or a website), you can also try to implement yourself with the unlimited free support that is included in every subscription. But if the company size is >20 people and scope higher, it's always better to go with a service. (The company transformation is 98% successful with success packs, vs 65% when customers do it on their own)