Migre agora; caso contrário, o reajuste continua.

Migre is the imperative form of the verb migrar for você in Brazilian Portuguese.

In Brazilian Portuguese, commands to você often use the present subjunctive form:

• migrar → que você migre → command: Migre!

So:

• Migre agora = Migrate now / Switch now

You usually do not need to say você, because the command already implies the subject. Adding você can sound more emphatic:

• Migre agora. = neutral, common
• Você migre agora. = unusual in most everyday contexts
• Você migra agora. = grammatically this looks more like a statement than a natural command

So Migre agora is the most natural marketing/instruction style here.

Yes, migre comes from migrar.

In Portuguese, migrar is often used in business, technology, telecom, or service contexts to mean:

• switch plans
• move to another platform
• transfer to another service
• migrate data/accounts

So even though English migrate can sound formal or technical, Portuguese migrar is very common in advertising and customer-service language.

In a sentence like this, it probably means something like:

• switch now
• move to the new plan now
• migrate now

The exact translation depends on context, but the Portuguese wording is natural.

Caso contrário means otherwise or if not.

It is a fixed expression:

• caso = case
• contrário = contrary / opposite

Together, it works like:

• otherwise
• if that is not the case
• if you do not do that

In this sentence:

• Migre agora; caso contrário, o reajuste continua.

the idea is:

• Switch now; otherwise, the price adjustment continues.

It is a somewhat formal, very common linking expression in written Portuguese.

Sometimes yes, but not always with exactly the same tone.

1. caso contrário

This is the most formal and polished option here.

• Migre agora; caso contrário, o reajuste continua.

2. senão

This can also mean otherwise:

• Migre agora; senão, o reajuste continua.

This is possible, but it sounds a little more direct and less formal.

3. se não

This literally means if not, but it is not always interchangeable with senão.

• Migre agora; se não, o reajuste continua.

You may hear or see this, but in careful writing many people prefer senão or caso contrário in this kind of sentence.

So for a formal advertisement or notice, caso contrário is a very natural choice.

Reajuste usually means an adjustment, especially a financial one.

In Brazilian Portuguese, it often appears in contexts like:

• reajuste de preço = price adjustment
• reajuste da mensalidade = fee increase/adjustment
• reajuste salarial = salary adjustment

In many real-world commercial contexts, reajuste strongly suggests an increase, but the word itself is more neutral than aumento.

So:

• aumento = increase
• reajuste = adjustment, often used in official/commercial language

Companies often prefer reajuste because it sounds more technical or less blunt than aumento.

Portuguese often uses the definite article where English might not.

• o reajuste = the adjustment
• but in English, we might simply say price increases continue or the adjustment remains in effect

Using o here makes the noun sound specific and identifiable. It refers to a particular adjustment already known from the situation, such as a planned rate change.

This is very common in Portuguese:

• o preço subiu
• a cobrança continua
• o reajuste continua

English often drops the article in places where Portuguese keeps it.

Continua is the present indicative of continuar:

• o reajuste continua = the adjustment continues

Portuguese, like English, can use the present tense to talk about something that is already in effect or will remain in effect from now on.

So this sentence gives the sense:

• if you do not migrate, the adjustment remains in place
• the increase keeps applying
• the adjustment continues

If you said continuará, that would mean will continue, which is also possible, but slightly more explicitly future-oriented.

Compare:

• o reajuste continua = the adjustment continues / stays in effect
• o reajuste continuará = the adjustment will continue

The version with continua is very natural in notices and commercial messaging.

The semicolon separates two closely related parts of the message:

• Migre agora
• caso contrário, o reajuste continua

It is stronger than a comma but not as final as a period.

This is common in formal or promotional writing when the writer wants to create a clear contrast:

• action now
• consequence otherwise

You could also see:

• Migre agora. Caso contrário, o reajuste continua.
• Migre agora, caso contrário, o reajuste continua.

But the semicolon gives the sentence a neat, formal, persuasive feel.

It sounds neutral to formal, especially because of caso contrário and reajuste.

Different parts contribute to that tone:

• Migre agora = direct and promotional
• caso contrário = formal connector
• reajuste = business/administrative vocabulary

This sounds very much like something from:

• a phone company
• a bank
• a streaming platform
• an internet provider
• a billing notice

It is not casual everyday conversation. In speech, a person might say something simpler, like:

• Muda agora, senão o aumento continua.
• Troca agora, senão vai continuar o reajuste.

But for marketing or official communication, the original sentence is very natural.

Yes, very often switch is the more natural English translation, depending on context.

Portuguese may use migrar in contexts where English would prefer:

• switch
• move
• transfer
• upgrade
• change over

For example:

• Migre para o plano digital.
  = Switch to the digital plan.

• Migre seus dados para a nuvem.
  = Move your data to the cloud.

So although migrar is the literal source of migrate, the best English translation is often something more idiomatic.

A helpful approximate pronunciation is:

• caso ≈ KAH-zoo
• contrário ≈ kon-TRAH-ryoo

A fuller approximation for the whole expression:

• KAH-zoo kon-TRAH-ryoo

A few notes:

• s in caso sounds like a z
• the stress in contrário falls on trá
• the final o in Brazilian Portuguese is often pronounced like oo

This is only an approximation for English speakers, but it is a useful starting point.

Not naturally in this context.

Caso contrário usually introduces the alternative consequence, so it works best at the beginning of that clause:

• Migre agora; caso contrário, o reajuste continua.

If you move it to the end:

• O reajuste continua caso contrário

that sounds incomplete or awkward, because caso contrário is meant to mean otherwise, and it normally points back to a previous idea.

So the original order is much more natural.

The sentence works in general Portuguese, but it feels very natural in Brazilian commercial language.

A few things make it sound especially typical of Brazil-based customer communication:

• use of você-style imperative: Migre
• business vocabulary like reajuste
• concise promotional wording
• direct call to action: agora

A company in Brazil might use exactly this kind of sentence in an email, app notification, SMS, or website banner.