Due to cultural and religious differences the strategy of customer’s relationship management is different in east and west?

I will answer with an illustration.

Birthday congrats via CRM system database

Some CRM experts may devise CRM as such to send automatic, yet personalized, birthday congratulations emails to customers (even B2B customer's contact persons). These may carry an incentive, a special, a coupon or a digital gift or incentive. This is a brilliant idea if it is not privacy breaching & in accordance with opt-in & op-out regulations in Western countries. 

However, in Middle Eastern & Far Eastern countries, people may have a different notion of birthday congratulations. For instance, and according to my knowledge, birthdays are not (widely) celebrated in the GCC area among native inhabitants due to religious motives. So would sending such a “thoughtful" e-mail be applauded or would it rather backfire as it is viewed as offensive. 

Yes, in some area's, culture DOES play a role. One must be wary of such sensitivities.

Customer Relationship Management ( CRM ) has the same goals and target everywhere. Most of CRMs aims to get high level of customer satisfaction and retention.

When it comes into implementation and applying procedures of CRMs, it becomes different and various.

The difference is not only between East and West, CRM strategy may differ between two cities in the same country or two countries in the same continent.

Culture and religious habits plays an important role in the formation of your customers mindset.

So in my opinion, i think CRM implementation will be different in East and West, every culture needs its own selling language, marketing procedures and specific level of customer service and support.

The success of CRM Strategy depends upon its execution at all stages and While devising a CRM Strategy you need to consider following;What is the Purpose2.Which market you are in and who is your client3.Have your tailored it as per needs of your customer,staff,product,service,market and area.4.Have your measured it through S W OT Analysis.3.Have you made it friendly which is adaptable and acceptable to your staff first.4.Have you analysed it in line to local competition and internal competition and Budget.5.Have you kept a provision,scope in your CRM Strategy in case your apprehend a failure.

I hope it answers your point.

i believe strategy is the same but the implementation must be tailored due to demographics and psycographics